./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro --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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- 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-8393723 [2022-11-18 20:22:25,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:22:25,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:22:25,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:22:25,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:22:25,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:22:25,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:22:25,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:22:25,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:22:25,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:22:25,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:22:25,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:22:25,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:22:25,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:22:25,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:22:25,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:22:25,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:22:25,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:22:25,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:22:25,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:22:25,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:22:25,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:22:25,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:22:25,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:22:25,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:22:25,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:22:25,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:22:25,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:22:25,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:22:25,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:22:25,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:22:25,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:22:25,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:22:25,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:22:25,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:22:25,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:22:25,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:22:25,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:22:25,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:22:25,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:22:25,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:22:25,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:22:25,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:22:25,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:22:25,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:22:25,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:22:25,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:22:25,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:22:25,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:22:25,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:22:25,457 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:22:25,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:22:25,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:22:25,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:22:25,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:22:25,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:22:25,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:22:25,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:22:25,460 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:22:25,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:22:25,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:22:25,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:22:25,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:22:25,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:22:25,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:22:25,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:22:25,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:22:25,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:22:25,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:22:25,463 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:22:25,463 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:22:25,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:22:25,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2022-11-18 20:22:25,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:22:25,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:22:25,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:22:25,781 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:22:25,783 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:22:25,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-11-18 20:22:25,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/data/b2726e052/a977933d05f245469bdb5f1ff5aa17c0/FLAG69cf8f455 [2022-11-18 20:22:26,739 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:22:26,739 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-11-18 20:22:26,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/data/b2726e052/a977933d05f245469bdb5f1ff5aa17c0/FLAG69cf8f455 [2022-11-18 20:22:27,261 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/data/b2726e052/a977933d05f245469bdb5f1ff5aa17c0 [2022-11-18 20:22:27,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:22:27,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:22:27,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:22:27,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:22:27,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:22:27,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:22:27" (1/1) ... [2022-11-18 20:22:27,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a84589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:27, skipping insertion in model container [2022-11-18 20:22:27,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:22:27" (1/1) ... [2022-11-18 20:22:27,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:22:27,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:22:27,841 WARN L234 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_c708687c-fbcb-478f-a392-e358d68d19ce/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-11-18 20:22:27,850 WARN L234 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_c708687c-fbcb-478f-a392-e358d68d19ce/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-11-18 20:22:29,022 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,032 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,033 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,035 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,038 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,075 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,076 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,081 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,083 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:22:29,613 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:22:29,614 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:22:29,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:22:29,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:22:29,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:22:29,628 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:22:29,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:22:29,634 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:22:29,636 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:22:29,857 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:22:29,890 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:29,890 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,029 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,031 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:22:30,241 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:22:30,270 WARN L234 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_c708687c-fbcb-478f-a392-e358d68d19ce/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-11-18 20:22:30,277 WARN L234 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_c708687c-fbcb-478f-a392-e358d68d19ce/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-11-18 20:22:30,335 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,337 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,338 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,339 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,341 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,360 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,369 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,371 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,371 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,432 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:22:30,433 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:22:30,433 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:22:30,434 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:22:30,435 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:22:30,436 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:22:30,436 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:22:30,437 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:22:30,437 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:22:30,443 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:22:30,476 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:22:30,499 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,500 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,569 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,569 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:22:30,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:22:30,911 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:22:30,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30 WrapperNode [2022-11-18 20:22:30,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:22:30,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:22:30,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:22:30,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:22:30,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,216 INFO L138 Inliner]: procedures = 691, calls = 2636, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1064 [2022-11-18 20:22:31,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:22:31,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:22:31,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:22:31,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:22:31,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:22:31,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:22:31,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:22:31,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:22:31,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (1/1) ... [2022-11-18 20:22:31,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:22:31,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:31,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:22:31,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:22:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-18 20:22:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-18 20:22:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-18 20:22:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-18 20:22:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:22:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 20:22:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 20:22:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-18 20:22:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-18 20:22:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:22:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 20:22:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 20:22:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:22:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:22:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:22:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:22:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:22:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-18 20:22:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-18 20:22:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:22:31,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:22:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 20:22:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 20:22:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-18 20:22:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-18 20:22:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-18 20:22:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-18 20:22:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:22:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:22:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-18 20:22:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-18 20:22:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-18 20:22:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-18 20:22:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:22:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-18 20:22:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-18 20:22:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:22:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:22:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 20:22:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 20:22:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-18 20:22:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-18 20:22:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-11-18 20:22:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-11-18 20:22:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-18 20:22:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-18 20:22:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:22:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:22:32,063 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:22:32,066 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:22:33,684 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:22:33,694 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:22:33,695 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:22:33,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:22:33 BoogieIcfgContainer [2022-11-18 20:22:33,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:22:33,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:22:33,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:22:33,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:22:33,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:22:27" (1/3) ... [2022-11-18 20:22:33,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a8e527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:22:33, skipping insertion in model container [2022-11-18 20:22:33,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:22:30" (2/3) ... [2022-11-18 20:22:33,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a8e527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:22:33, skipping insertion in model container [2022-11-18 20:22:33,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:22:33" (3/3) ... [2022-11-18 20:22:33,713 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2022-11-18 20:22:33,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:22:33,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:22:33,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:22:33,855 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;@7f52814f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:22:33,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:22:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-18 20:22:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 20:22:33,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:33,888 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:22:33,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:33,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1072542744, now seen corresponding path program 1 times [2022-11-18 20:22:33,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:33,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029216913] [2022-11-18 20:22:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:22:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:22:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:22:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:22:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:22:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:22:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:22:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:22:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:22:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:22:35,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:35,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029216913] [2022-11-18 20:22:35,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029216913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:35,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:35,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:22:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945835827] [2022-11-18 20:22:35,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:22:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:22:35,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:22:35,074 INFO L87 Difference]: Start difference. First operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:22:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:35,947 INFO L93 Difference]: Finished difference Result 500 states and 722 transitions. [2022-11-18 20:22:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:22:35,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2022-11-18 20:22:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:35,966 INFO L225 Difference]: With dead ends: 500 [2022-11-18 20:22:35,966 INFO L226 Difference]: Without dead ends: 255 [2022-11-18 20:22:35,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:22:35,976 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 107 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:35,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 309 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:22:35,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-18 20:22:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2022-11-18 20:22:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2171052631578947) internal successors, (185), 153 states have internal predecessors, (185), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-18 20:22:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2022-11-18 20:22:36,105 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 83 [2022-11-18 20:22:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:36,106 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2022-11-18 20:22:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:22:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2022-11-18 20:22:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:22:36,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:36,118 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:22:36,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:22:36,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2014404208, now seen corresponding path program 1 times [2022-11-18 20:22:36,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:36,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933174626] [2022-11-18 20:22:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:36,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:22:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:22:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:22:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:22:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:22:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:22:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:22:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:22:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:22:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:22:37,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933174626] [2022-11-18 20:22:37,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933174626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646100288] [2022-11-18 20:22:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:37,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:37,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:37,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:22:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:38,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:22:38,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:22:38,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:22:38,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646100288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:38,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:22:38,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-18 20:22:38,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138544280] [2022-11-18 20:22:38,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:38,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:22:38,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:22:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:22:38,416 INFO L87 Difference]: Start difference. First operand 243 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 20:22:38,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:38,954 INFO L93 Difference]: Finished difference Result 478 states and 649 transitions. [2022-11-18 20:22:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:22:38,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2022-11-18 20:22:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:38,964 INFO L225 Difference]: With dead ends: 478 [2022-11-18 20:22:38,964 INFO L226 Difference]: Without dead ends: 246 [2022-11-18 20:22:38,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:22:38,974 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 371 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:38,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 963 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:22:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-18 20:22:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-18 20:22:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2142857142857142) internal successors, (187), 156 states have internal predecessors, (187), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2022-11-18 20:22:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2022-11-18 20:22:39,007 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 85 [2022-11-18 20:22:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:39,008 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2022-11-18 20:22:39,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 20:22:39,008 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2022-11-18 20:22:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 20:22:39,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:39,011 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:22:39,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:39,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash -756708827, now seen corresponding path program 1 times [2022-11-18 20:22:39,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:39,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473115243] [2022-11-18 20:22:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:39,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:22:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:22:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:22:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:22:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:22:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:22:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:22:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:22:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:22:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:22:40,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:40,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473115243] [2022-11-18 20:22:40,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473115243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:40,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782527456] [2022-11-18 20:22:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:40,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:40,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:40,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:40,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:22:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:40,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:22:40,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:22:41,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:22:41,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782527456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:41,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:41,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-18 20:22:41,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958261703] [2022-11-18 20:22:41,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:41,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:22:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:41,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:22:41,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:22:41,313 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-18 20:22:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:42,749 INFO L93 Difference]: Finished difference Result 487 states and 664 transitions. [2022-11-18 20:22:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:22:42,750 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 91 [2022-11-18 20:22:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:42,755 INFO L225 Difference]: With dead ends: 487 [2022-11-18 20:22:42,756 INFO L226 Difference]: Without dead ends: 261 [2022-11-18 20:22:42,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:22:42,761 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 396 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:42,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 803 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:22:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-18 20:22:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2022-11-18 20:22:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 156 states have (on average 1.2115384615384615) internal successors, (189), 159 states have internal predecessors, (189), 72 states have call successors, (72), 18 states have call predecessors, (72), 20 states have return successors, (81), 71 states have call predecessors, (81), 71 states have call successors, (81) [2022-11-18 20:22:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 342 transitions. [2022-11-18 20:22:42,807 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 342 transitions. Word has length 91 [2022-11-18 20:22:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:42,808 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 342 transitions. [2022-11-18 20:22:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-18 20:22:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 342 transitions. [2022-11-18 20:22:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:22:42,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:42,812 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:22:42,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:43,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:43,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:43,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash 625725610, now seen corresponding path program 1 times [2022-11-18 20:22:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:43,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49169282] [2022-11-18 20:22:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:43,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:22:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:22:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:22:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:22:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:22:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:22:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:22:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:22:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:22:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:22:43,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:43,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49169282] [2022-11-18 20:22:43,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49169282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:43,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:43,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:22:43,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070947988] [2022-11-18 20:22:43,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:43,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:22:43,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:43,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:22:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:22:43,922 INFO L87 Difference]: Start difference. First operand 249 states and 342 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 20:22:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:45,019 INFO L93 Difference]: Finished difference Result 487 states and 663 transitions. [2022-11-18 20:22:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:22:45,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 93 [2022-11-18 20:22:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:45,023 INFO L225 Difference]: With dead ends: 487 [2022-11-18 20:22:45,023 INFO L226 Difference]: Without dead ends: 258 [2022-11-18 20:22:45,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:22:45,025 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 259 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:45,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 719 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:22:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-18 20:22:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2022-11-18 20:22:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2077922077922079) internal successors, (186), 156 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2022-11-18 20:22:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 334 transitions. [2022-11-18 20:22:45,067 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 334 transitions. Word has length 93 [2022-11-18 20:22:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:45,070 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 334 transitions. [2022-11-18 20:22:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 20:22:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 334 transitions. [2022-11-18 20:22:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 20:22:45,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:45,078 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:22:45,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:22:45,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2034657995, now seen corresponding path program 1 times [2022-11-18 20:22:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:45,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198870858] [2022-11-18 20:22:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:22:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:22:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:22:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:22:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:22:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:22:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:22:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:22:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:22:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 20:22:45,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198870858] [2022-11-18 20:22:45,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198870858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:45,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:45,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:22:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950766148] [2022-11-18 20:22:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:45,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:22:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:22:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:22:45,972 INFO L87 Difference]: Start difference. First operand 246 states and 334 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 20:22:47,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:47,005 INFO L93 Difference]: Finished difference Result 478 states and 642 transitions. [2022-11-18 20:22:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:22:47,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 99 [2022-11-18 20:22:47,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:47,009 INFO L225 Difference]: With dead ends: 478 [2022-11-18 20:22:47,010 INFO L226 Difference]: Without dead ends: 255 [2022-11-18 20:22:47,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:22:47,012 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 249 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:47,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 611 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:22:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-18 20:22:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2022-11-18 20:22:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 153 states have internal predecessors, (183), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-18 20:22:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 326 transitions. [2022-11-18 20:22:47,046 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 326 transitions. Word has length 99 [2022-11-18 20:22:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:47,047 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 326 transitions. [2022-11-18 20:22:47,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 20:22:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 326 transitions. [2022-11-18 20:22:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 20:22:47,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:47,050 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:22:47,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:22:47,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1162403066, now seen corresponding path program 1 times [2022-11-18 20:22:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:47,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912022329] [2022-11-18 20:22:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:47,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:48,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:22:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:22:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:22:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:22:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:22:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:22:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:22:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:22:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:22:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 20:22:49,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:49,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912022329] [2022-11-18 20:22:49,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912022329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:49,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100043031] [2022-11-18 20:22:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:49,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:49,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:49,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:49,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:22:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:49,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:22:49,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:51,231 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 26 treesize of output 14 [2022-11-18 20:22:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:22:51,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:51,432 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 26 treesize of output 14 [2022-11-18 20:22:51,499 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 20:22:51,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-18 20:22:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 20:22:51,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100043031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:51,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:51,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 15 [2022-11-18 20:22:51,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643570759] [2022-11-18 20:22:51,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:51,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:22:51,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:22:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:22:51,545 INFO L87 Difference]: Start difference. First operand 243 states and 326 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 20:22:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:56,459 INFO L93 Difference]: Finished difference Result 650 states and 896 transitions. [2022-11-18 20:22:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:22:56,461 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 101 [2022-11-18 20:22:56,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:56,465 INFO L225 Difference]: With dead ends: 650 [2022-11-18 20:22:56,465 INFO L226 Difference]: Without dead ends: 443 [2022-11-18 20:22:56,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 213 SyntacticMatches, 13 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=197, Invalid=1063, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:22:56,469 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 347 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:56,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1777 Invalid, 3360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [218 Valid, 2711 Invalid, 0 Unknown, 431 Unchecked, 3.9s Time] [2022-11-18 20:22:56,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-18 20:22:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 293. [2022-11-18 20:22:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 190 states have (on average 1.2052631578947368) internal successors, (229), 191 states have internal predecessors, (229), 80 states have call successors, (80), 21 states have call predecessors, (80), 22 states have return successors, (88), 80 states have call predecessors, (88), 79 states have call successors, (88) [2022-11-18 20:22:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 397 transitions. [2022-11-18 20:22:56,513 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 397 transitions. Word has length 101 [2022-11-18 20:22:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:56,513 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 397 transitions. [2022-11-18 20:22:56,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 12 states have internal predecessors, (88), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 20:22:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 397 transitions. [2022-11-18 20:22:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-18 20:22:56,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:56,516 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:22:56,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:56,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:22:56,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1694138625, now seen corresponding path program 1 times [2022-11-18 20:22:56,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:56,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552707933] [2022-11-18 20:22:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:56,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:22:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:22:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:22:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:22:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:22:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:22:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:22:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:22:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:22:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:22:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-18 20:22:57,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552707933] [2022-11-18 20:22:57,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552707933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:57,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:57,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:22:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45110043] [2022-11-18 20:22:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:57,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:22:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:22:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:22:57,395 INFO L87 Difference]: Start difference. First operand 293 states and 397 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-18 20:22:58,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:58,718 INFO L93 Difference]: Finished difference Result 402 states and 537 transitions. [2022-11-18 20:22:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:22:58,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2022-11-18 20:22:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:58,721 INFO L225 Difference]: With dead ends: 402 [2022-11-18 20:22:58,721 INFO L226 Difference]: Without dead ends: 331 [2022-11-18 20:22:58,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:22:58,723 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 214 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:58,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 958 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:22:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-18 20:22:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 295. [2022-11-18 20:22:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 192 states have (on average 1.203125) internal successors, (231), 193 states have internal predecessors, (231), 80 states have call successors, (80), 21 states have call predecessors, (80), 22 states have return successors, (88), 80 states have call predecessors, (88), 79 states have call successors, (88) [2022-11-18 20:22:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 399 transitions. [2022-11-18 20:22:58,777 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 399 transitions. Word has length 105 [2022-11-18 20:22:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:58,778 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 399 transitions. [2022-11-18 20:22:58,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-18 20:22:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 399 transitions. [2022-11-18 20:22:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-18 20:22:58,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:58,782 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:22:58,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:22:58,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1159574532, now seen corresponding path program 1 times [2022-11-18 20:22:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:58,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420561376] [2022-11-18 20:22:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:23:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:23:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:23:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:23:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:23:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:23:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:23:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:23:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:23:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:23:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420561376] [2022-11-18 20:23:04,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420561376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:04,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:04,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:23:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722615711] [2022-11-18 20:23:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:23:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:04,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:23:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:23:04,428 INFO L87 Difference]: Start difference. First operand 295 states and 399 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-18 20:23:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:08,502 INFO L93 Difference]: Finished difference Result 670 states and 940 transitions. [2022-11-18 20:23:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:23:08,503 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 107 [2022-11-18 20:23:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:08,509 INFO L225 Difference]: With dead ends: 670 [2022-11-18 20:23:08,510 INFO L226 Difference]: Without dead ends: 382 [2022-11-18 20:23:08,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:23:08,514 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 435 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 3474 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 3474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:08,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1332 Invalid, 3838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 3474 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-18 20:23:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-18 20:23:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 296. [2022-11-18 20:23:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 189 states have (on average 1.1851851851851851) internal successors, (224), 191 states have internal predecessors, (224), 85 states have call successors, (85), 20 states have call predecessors, (85), 21 states have return successors, (98), 84 states have call predecessors, (98), 84 states have call successors, (98) [2022-11-18 20:23:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 407 transitions. [2022-11-18 20:23:08,579 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 407 transitions. Word has length 107 [2022-11-18 20:23:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:08,579 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 407 transitions. [2022-11-18 20:23:08,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-18 20:23:08,580 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 407 transitions. [2022-11-18 20:23:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 20:23:08,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:08,581 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:08,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:23:08,582 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 64245244, now seen corresponding path program 1 times [2022-11-18 20:23:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:08,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558175182] [2022-11-18 20:23:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:08,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:23:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:23:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:23:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:23:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:23:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:23:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:23:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:23:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 20:23:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-18 20:23:13,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:13,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558175182] [2022-11-18 20:23:13,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558175182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:13,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:13,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:23:13,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514183295] [2022-11-18 20:23:13,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:23:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:23:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:23:13,538 INFO L87 Difference]: Start difference. First operand 296 states and 407 transitions. Second operand has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-18 20:23:16,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:16,835 INFO L93 Difference]: Finished difference Result 406 states and 582 transitions. [2022-11-18 20:23:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:23:16,836 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 115 [2022-11-18 20:23:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:16,840 INFO L225 Difference]: With dead ends: 406 [2022-11-18 20:23:16,840 INFO L226 Difference]: Without dead ends: 404 [2022-11-18 20:23:16,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:23:16,844 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 401 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:16,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1290 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:23:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-18 20:23:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 312. [2022-11-18 20:23:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 198 states have (on average 1.1818181818181819) internal successors, (234), 201 states have internal predecessors, (234), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (103), 88 states have call predecessors, (103), 89 states have call successors, (103) [2022-11-18 20:23:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 427 transitions. [2022-11-18 20:23:16,909 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 427 transitions. Word has length 115 [2022-11-18 20:23:16,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:16,910 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 427 transitions. [2022-11-18 20:23:16,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-18 20:23:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 427 transitions. [2022-11-18 20:23:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 20:23:16,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:16,913 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:16,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:23:16,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:16,914 INFO L85 PathProgramCache]: Analyzing trace with hash -64782454, now seen corresponding path program 1 times [2022-11-18 20:23:16,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:16,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428412686] [2022-11-18 20:23:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:16,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:23:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:23:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:23:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:23:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:23:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:23:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:23:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 20:23:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 20:23:18,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:18,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428412686] [2022-11-18 20:23:18,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428412686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:18,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787242033] [2022-11-18 20:23:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:18,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:18,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:18,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:18,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:23:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:18,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:23:18,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 20:23:19,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:19,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787242033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:19,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:19,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-11-18 20:23:19,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000687909] [2022-11-18 20:23:19,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:19,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:23:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:19,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:23:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:23:19,041 INFO L87 Difference]: Start difference. First operand 312 states and 427 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:23:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:19,377 INFO L93 Difference]: Finished difference Result 631 states and 884 transitions. [2022-11-18 20:23:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:19,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-11-18 20:23:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:19,380 INFO L225 Difference]: With dead ends: 631 [2022-11-18 20:23:19,380 INFO L226 Difference]: Without dead ends: 330 [2022-11-18 20:23:19,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:23:19,383 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 40 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:19,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1162 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2022-11-18 20:23:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-18 20:23:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 317. [2022-11-18 20:23:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.187192118226601) internal successors, (241), 206 states have internal predecessors, (241), 90 states have call successors, (90), 22 states have call predecessors, (90), 23 states have return successors, (103), 88 states have call predecessors, (103), 89 states have call successors, (103) [2022-11-18 20:23:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 434 transitions. [2022-11-18 20:23:19,440 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 434 transitions. Word has length 117 [2022-11-18 20:23:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:19,441 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 434 transitions. [2022-11-18 20:23:19,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:23:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 434 transitions. [2022-11-18 20:23:19,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 20:23:19,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:19,443 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:19,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:23:19,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:19,653 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:19,654 INFO L85 PathProgramCache]: Analyzing trace with hash -587369526, now seen corresponding path program 1 times [2022-11-18 20:23:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:19,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708549257] [2022-11-18 20:23:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:19,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:23:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:23:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:23:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:23:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:23:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:23:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:23:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 20:23:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 20:23:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708549257] [2022-11-18 20:23:20,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708549257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505669590] [2022-11-18 20:23:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:20,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:20,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:20,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:20,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:23:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:21,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 20:23:21,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:23:21,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:21,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505669590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:21,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:21,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-11-18 20:23:21,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73253595] [2022-11-18 20:23:21,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:21,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:23:21,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:21,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:23:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:23:21,472 INFO L87 Difference]: Start difference. First operand 317 states and 434 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 20:23:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:21,747 INFO L93 Difference]: Finished difference Result 628 states and 866 transitions. [2022-11-18 20:23:21,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:23:21,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-11-18 20:23:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:21,750 INFO L225 Difference]: With dead ends: 628 [2022-11-18 20:23:21,751 INFO L226 Difference]: Without dead ends: 322 [2022-11-18 20:23:21,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:23:21,753 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 13 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:21,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2442 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:23:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-18 20:23:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2022-11-18 20:23:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 207 states have (on average 1.183574879227053) internal successors, (245), 211 states have internal predecessors, (245), 90 states have call successors, (90), 22 states have call predecessors, (90), 24 states have return successors, (112), 88 states have call predecessors, (112), 89 states have call successors, (112) [2022-11-18 20:23:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 447 transitions. [2022-11-18 20:23:21,807 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 447 transitions. Word has length 117 [2022-11-18 20:23:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:21,807 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 447 transitions. [2022-11-18 20:23:21,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 20:23:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 447 transitions. [2022-11-18 20:23:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 20:23:21,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:21,811 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:21,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:22,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:22,021 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1600716835, now seen corresponding path program 1 times [2022-11-18 20:23:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749879537] [2022-11-18 20:23:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:23:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:23:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:23:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:23:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:23:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:23:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:23:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:23:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-18 20:23:22,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:22,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749879537] [2022-11-18 20:23:22,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749879537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:22,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073417665] [2022-11-18 20:23:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:22,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:22,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:22,448 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:22,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:23:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:23:23,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:23:23,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:23,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073417665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:23,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:23,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-18 20:23:23,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201967488] [2022-11-18 20:23:23,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:23,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:23,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:23,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:23,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:23:23,051 INFO L87 Difference]: Start difference. First operand 322 states and 447 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:23:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:23,137 INFO L93 Difference]: Finished difference Result 638 states and 894 transitions. [2022-11-18 20:23:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:23,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-11-18 20:23:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:23,141 INFO L225 Difference]: With dead ends: 638 [2022-11-18 20:23:23,141 INFO L226 Difference]: Without dead ends: 327 [2022-11-18 20:23:23,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:23,143 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 9 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:23,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 966 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:23:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-18 20:23:23,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 324. [2022-11-18 20:23:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 209 states have (on average 1.1818181818181819) internal successors, (247), 213 states have internal predecessors, (247), 90 states have call successors, (90), 22 states have call predecessors, (90), 24 states have return successors, (112), 88 states have call predecessors, (112), 89 states have call successors, (112) [2022-11-18 20:23:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 449 transitions. [2022-11-18 20:23:23,196 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 449 transitions. Word has length 119 [2022-11-18 20:23:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:23,196 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 449 transitions. [2022-11-18 20:23:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:23:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 449 transitions. [2022-11-18 20:23:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 20:23:23,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:23,199 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:23,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:23,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:23:23,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:23,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:23,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1810399649, now seen corresponding path program 1 times [2022-11-18 20:23:23,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:23,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547094503] [2022-11-18 20:23:23,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:23,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:23:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:23:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:23:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:23:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:23:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:23:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:23:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:23:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:23:23,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:23,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547094503] [2022-11-18 20:23:23,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547094503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:23,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233207689] [2022-11-18 20:23:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:23,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:23,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:23,821 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:23,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:23:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:24,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:23:24,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:23:24,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:24,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233207689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:24,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:24,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-18 20:23:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751698063] [2022-11-18 20:23:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:24,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:23:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:24,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:23:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:23:24,469 INFO L87 Difference]: Start difference. First operand 324 states and 449 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:23:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:24,575 INFO L93 Difference]: Finished difference Result 654 states and 924 transitions. [2022-11-18 20:23:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:23:24,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-11-18 20:23:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:24,578 INFO L225 Difference]: With dead ends: 654 [2022-11-18 20:23:24,578 INFO L226 Difference]: Without dead ends: 341 [2022-11-18 20:23:24,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:23:24,582 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 28 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:24,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 981 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:23:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-18 20:23:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 324. [2022-11-18 20:23:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 209 states have (on average 1.1770334928229664) internal successors, (246), 213 states have internal predecessors, (246), 90 states have call successors, (90), 22 states have call predecessors, (90), 24 states have return successors, (112), 88 states have call predecessors, (112), 89 states have call successors, (112) [2022-11-18 20:23:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 448 transitions. [2022-11-18 20:23:24,644 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 448 transitions. Word has length 119 [2022-11-18 20:23:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:24,644 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 448 transitions. [2022-11-18 20:23:24,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:23:24,645 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 448 transitions. [2022-11-18 20:23:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 20:23:24,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:24,648 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:24,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:24,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:24,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:24,865 INFO L85 PathProgramCache]: Analyzing trace with hash 865592733, now seen corresponding path program 1 times [2022-11-18 20:23:24,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:24,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207444359] [2022-11-18 20:23:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:24,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:23:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:23:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:23:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:23:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:23:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:23:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:23:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:23:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 20:23:25,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:25,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207444359] [2022-11-18 20:23:25,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207444359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:25,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055144624] [2022-11-18 20:23:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:25,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:25,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:25,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:25,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:23:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:26,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2653 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 20:23:26,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:26,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:23:26,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:23:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:23:27,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:27,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055144624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:27,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:27,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2022-11-18 20:23:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997452019] [2022-11-18 20:23:27,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:27,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:23:27,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:27,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:23:27,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:23:27,328 INFO L87 Difference]: Start difference. First operand 324 states and 448 transitions. Second operand has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-18 20:23:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:28,008 INFO L93 Difference]: Finished difference Result 688 states and 956 transitions. [2022-11-18 20:23:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:23:28,008 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 119 [2022-11-18 20:23:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:28,012 INFO L225 Difference]: With dead ends: 688 [2022-11-18 20:23:28,012 INFO L226 Difference]: Without dead ends: 392 [2022-11-18 20:23:28,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:23:28,014 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 130 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 530 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:28,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 3183 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 308 Invalid, 0 Unknown, 530 Unchecked, 0.5s Time] [2022-11-18 20:23:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-18 20:23:28,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 333. [2022-11-18 20:23:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 217 states have (on average 1.1797235023041475) internal successors, (256), 221 states have internal predecessors, (256), 91 states have call successors, (91), 23 states have call predecessors, (91), 24 states have return successors, (114), 88 states have call predecessors, (114), 90 states have call successors, (114) [2022-11-18 20:23:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 461 transitions. [2022-11-18 20:23:28,070 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 461 transitions. Word has length 119 [2022-11-18 20:23:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:28,071 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 461 transitions. [2022-11-18 20:23:28,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-18 20:23:28,071 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 461 transitions. [2022-11-18 20:23:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 20:23:28,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:28,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:23:28,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:28,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:23:28,284 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash -974126782, now seen corresponding path program 1 times [2022-11-18 20:23:28,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:28,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506155981] [2022-11-18 20:23:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:23:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:23:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:23:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:23:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:23:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:23:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:23:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:23:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 20:23:29,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:29,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506155981] [2022-11-18 20:23:29,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506155981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:29,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933612949] [2022-11-18 20:23:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:29,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:29,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:29,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:29,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:23:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:30,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:23:30,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:23:30,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:23:30,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933612949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:30,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:23:30,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-11-18 20:23:30,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917199570] [2022-11-18 20:23:30,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:30,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:23:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:23:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:23:30,200 INFO L87 Difference]: Start difference. First operand 333 states and 461 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:23:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:30,534 INFO L93 Difference]: Finished difference Result 620 states and 864 transitions. [2022-11-18 20:23:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:23:30,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-11-18 20:23:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:30,537 INFO L225 Difference]: With dead ends: 620 [2022-11-18 20:23:30,538 INFO L226 Difference]: Without dead ends: 333 [2022-11-18 20:23:30,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:23:30,540 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 19 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:30,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1169 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2022-11-18 20:23:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-18 20:23:30,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-11-18 20:23:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 217 states have (on average 1.1751152073732718) internal successors, (255), 221 states have internal predecessors, (255), 91 states have call successors, (91), 23 states have call predecessors, (91), 24 states have return successors, (114), 88 states have call predecessors, (114), 90 states have call successors, (114) [2022-11-18 20:23:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 460 transitions. [2022-11-18 20:23:30,598 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 460 transitions. Word has length 121 [2022-11-18 20:23:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:30,598 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 460 transitions. [2022-11-18 20:23:30,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:23:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 460 transitions. [2022-11-18 20:23:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 20:23:30,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:30,601 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:23:30,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:30,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:23:30,811 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1391523388, now seen corresponding path program 1 times [2022-11-18 20:23:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:30,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334456607] [2022-11-18 20:23:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:23:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:23:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:23:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:23:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:23:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:23:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:23:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:23:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:23:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 20:23:31,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334456607] [2022-11-18 20:23:31,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334456607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:23:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232422091] [2022-11-18 20:23:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:31,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:23:31,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:23:31,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:23:31,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:23:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:32,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 20:23:32,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:23:38,798 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:23:44,868 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:23:50,935 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:23:57,002 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:24:03,071 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:24:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:24:03,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:03,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232422091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:03,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:03,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [10] total 20 [2022-11-18 20:24:03,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442052603] [2022-11-18 20:24:03,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:03,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:24:03,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:03,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:24:03,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:24:03,204 INFO L87 Difference]: Start difference. First operand 333 states and 460 transitions. Second operand has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 20:24:04,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:04,214 INFO L93 Difference]: Finished difference Result 638 states and 881 transitions. [2022-11-18 20:24:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:24:04,215 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 121 [2022-11-18 20:24:04,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:04,218 INFO L225 Difference]: With dead ends: 638 [2022-11-18 20:24:04,218 INFO L226 Difference]: Without dead ends: 347 [2022-11-18 20:24:04,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:24:04,220 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 43 mSDsluCounter, 4696 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 5013 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:04,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 5013 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 516 Invalid, 0 Unknown, 340 Unchecked, 0.5s Time] [2022-11-18 20:24:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-18 20:24:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 329. [2022-11-18 20:24:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 213 states have (on average 1.1690140845070423) internal successors, (249), 217 states have internal predecessors, (249), 91 states have call successors, (91), 23 states have call predecessors, (91), 24 states have return successors, (112), 88 states have call predecessors, (112), 90 states have call successors, (112) [2022-11-18 20:24:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 452 transitions. [2022-11-18 20:24:04,280 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 452 transitions. Word has length 121 [2022-11-18 20:24:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:04,280 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 452 transitions. [2022-11-18 20:24:04,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 20:24:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 452 transitions. [2022-11-18 20:24:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 20:24:04,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:04,282 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:04,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:04,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:24:04,492 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash 862515409, now seen corresponding path program 1 times [2022-11-18 20:24:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444115423] [2022-11-18 20:24:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:24:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:24:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:24:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:24:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:24:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:24:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:24:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:24:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:24:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:24:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 20:24:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:24:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:05,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444115423] [2022-11-18 20:24:05,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444115423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:05,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:05,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:24:05,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55718051] [2022-11-18 20:24:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:05,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:24:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:24:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:24:05,530 INFO L87 Difference]: Start difference. First operand 329 states and 452 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:24:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:06,743 INFO L93 Difference]: Finished difference Result 627 states and 860 transitions. [2022-11-18 20:24:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:24:06,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-11-18 20:24:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:06,746 INFO L225 Difference]: With dead ends: 627 [2022-11-18 20:24:06,746 INFO L226 Difference]: Without dead ends: 346 [2022-11-18 20:24:06,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:24:06,749 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 116 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:06,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1473 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:24:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-18 20:24:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 334. [2022-11-18 20:24:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 217 states have (on average 1.1658986175115207) internal successors, (253), 222 states have internal predecessors, (253), 91 states have call successors, (91), 23 states have call predecessors, (91), 25 states have return successors, (119), 88 states have call predecessors, (119), 90 states have call successors, (119) [2022-11-18 20:24:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 463 transitions. [2022-11-18 20:24:06,805 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 463 transitions. Word has length 123 [2022-11-18 20:24:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:06,805 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 463 transitions. [2022-11-18 20:24:06,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:24:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 463 transitions. [2022-11-18 20:24:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 20:24:06,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:06,808 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:06,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:24:06,808 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:06,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1506302913, now seen corresponding path program 1 times [2022-11-18 20:24:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:06,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429186514] [2022-11-18 20:24:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:24:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:24:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:24:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:24:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:24:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:24:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:24:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:24:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:24:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:24:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:24:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:24:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:24:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:10,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:24:11,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:11,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429186514] [2022-11-18 20:24:11,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429186514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:11,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:11,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:24:11,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598990662] [2022-11-18 20:24:11,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:11,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:24:11,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:11,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:24:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:24:11,005 INFO L87 Difference]: Start difference. First operand 334 states and 463 transitions. Second operand has 19 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-18 20:24:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:14,411 INFO L93 Difference]: Finished difference Result 456 states and 643 transitions. [2022-11-18 20:24:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:24:14,411 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 128 [2022-11-18 20:24:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:14,415 INFO L225 Difference]: With dead ends: 456 [2022-11-18 20:24:14,415 INFO L226 Difference]: Without dead ends: 450 [2022-11-18 20:24:14,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:24:14,416 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 625 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:14,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1374 Invalid, 3135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:24:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-18 20:24:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 392. [2022-11-18 20:24:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 261 states have (on average 1.1647509578544062) internal successors, (304), 266 states have internal predecessors, (304), 102 states have call successors, (102), 25 states have call predecessors, (102), 28 states have return successors, (143), 100 states have call predecessors, (143), 101 states have call successors, (143) [2022-11-18 20:24:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 549 transitions. [2022-11-18 20:24:14,490 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 549 transitions. Word has length 128 [2022-11-18 20:24:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:14,491 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 549 transitions. [2022-11-18 20:24:14,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-18 20:24:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 549 transitions. [2022-11-18 20:24:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 20:24:14,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:14,494 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:14,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:24:14,494 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:14,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1465929288, now seen corresponding path program 1 times [2022-11-18 20:24:14,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:14,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941202419] [2022-11-18 20:24:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:14,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:24:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:24:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:24:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:24:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:24:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:24:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:24:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:24:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:24:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:24:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:24:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 20:24:17,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:17,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941202419] [2022-11-18 20:24:17,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941202419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:17,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:17,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:24:17,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028586572] [2022-11-18 20:24:17,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:17,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:24:17,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:17,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:24:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:24:17,237 INFO L87 Difference]: Start difference. First operand 392 states and 549 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 8 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-18 20:24:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:19,813 INFO L93 Difference]: Finished difference Result 802 states and 1172 transitions. [2022-11-18 20:24:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:24:19,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 8 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 125 [2022-11-18 20:24:19,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:19,818 INFO L225 Difference]: With dead ends: 802 [2022-11-18 20:24:19,819 INFO L226 Difference]: Without dead ends: 538 [2022-11-18 20:24:19,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:24:19,821 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 318 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:19,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 926 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:24:19,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-18 20:24:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 429. [2022-11-18 20:24:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 281 states have (on average 1.1565836298932384) internal successors, (325), 286 states have internal predecessors, (325), 119 states have call successors, (119), 25 states have call predecessors, (119), 28 states have return successors, (168), 117 states have call predecessors, (168), 118 states have call successors, (168) [2022-11-18 20:24:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 612 transitions. [2022-11-18 20:24:19,911 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 612 transitions. Word has length 125 [2022-11-18 20:24:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:19,911 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 612 transitions. [2022-11-18 20:24:19,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 8 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-18 20:24:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 612 transitions. [2022-11-18 20:24:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 20:24:19,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:19,914 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:19,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:24:19,915 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:19,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1602682482, now seen corresponding path program 1 times [2022-11-18 20:24:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:19,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208091623] [2022-11-18 20:24:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:19,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:24:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:24:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:24:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:24:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:24:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:24:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:24:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:24:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:24:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:24:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 20:24:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 20:24:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-18 20:24:22,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:22,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208091623] [2022-11-18 20:24:22,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208091623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:22,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:22,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:24:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217100623] [2022-11-18 20:24:22,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:22,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:24:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:24:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:24:22,181 INFO L87 Difference]: Start difference. First operand 429 states and 612 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-18 20:24:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:24,422 INFO L93 Difference]: Finished difference Result 872 states and 1243 transitions. [2022-11-18 20:24:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:24:24,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 130 [2022-11-18 20:24:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:24,427 INFO L225 Difference]: With dead ends: 872 [2022-11-18 20:24:24,428 INFO L226 Difference]: Without dead ends: 505 [2022-11-18 20:24:24,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:24:24,431 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 262 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:24,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 1191 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 20:24:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-18 20:24:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 481. [2022-11-18 20:24:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 307 states have (on average 1.1433224755700326) internal successors, (351), 310 states have internal predecessors, (351), 145 states have call successors, (145), 25 states have call predecessors, (145), 28 states have return successors, (198), 145 states have call predecessors, (198), 144 states have call successors, (198) [2022-11-18 20:24:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 694 transitions. [2022-11-18 20:24:24,547 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 694 transitions. Word has length 130 [2022-11-18 20:24:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:24,548 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 694 transitions. [2022-11-18 20:24:24,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-18 20:24:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 694 transitions. [2022-11-18 20:24:24,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:24:24,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:24,552 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:24,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:24:24,552 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:24,553 INFO L85 PathProgramCache]: Analyzing trace with hash 152522594, now seen corresponding path program 1 times [2022-11-18 20:24:24,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:24,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850096764] [2022-11-18 20:24:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:24,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:24:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:24:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:24:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:24:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:24:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:24:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:24:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:24:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:24:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:24:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:24:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:24:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:24:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 20:24:27,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:27,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850096764] [2022-11-18 20:24:27,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850096764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:27,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665607041] [2022-11-18 20:24:27,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:27,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:27,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:27,054 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:27,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:24:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:27,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 20:24:27,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:27,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:24:28,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:28,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:28,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:28,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:24:28,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-11-18 20:24:30,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:24:30,459 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-11-18 20:24:30,460 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 44 treesize of output 46 [2022-11-18 20:24:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:24:31,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:24:32,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665607041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:32,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:24:32,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22] total 33 [2022-11-18 20:24:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643322406] [2022-11-18 20:24:32,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:24:32,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:24:32,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:32,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:24:32,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:24:32,041 INFO L87 Difference]: Start difference. First operand 481 states and 694 transitions. Second operand has 33 states, 31 states have (on average 5.193548387096774) internal successors, (161), 30 states have internal predecessors, (161), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-18 20:24:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:44,706 INFO L93 Difference]: Finished difference Result 1189 states and 1821 transitions. [2022-11-18 20:24:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-18 20:24:44,706 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.193548387096774) internal successors, (161), 30 states have internal predecessors, (161), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) Word has length 135 [2022-11-18 20:24:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:44,714 INFO L225 Difference]: With dead ends: 1189 [2022-11-18 20:24:44,715 INFO L226 Difference]: Without dead ends: 1001 [2022-11-18 20:24:44,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 215 SyntacticMatches, 17 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2122 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=670, Invalid=6136, Unknown=0, NotChecked=0, Total=6806 [2022-11-18 20:24:44,719 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 481 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 7121 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 5147 SdHoareTripleChecker+Invalid, 9061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 7121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1750 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:44,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 5147 Invalid, 9061 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 7121 Invalid, 0 Unknown, 1750 Unchecked, 9.0s Time] [2022-11-18 20:24:44,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-11-18 20:24:44,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 607. [2022-11-18 20:24:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 407 states have (on average 1.1425061425061425) internal successors, (465), 412 states have internal predecessors, (465), 163 states have call successors, (163), 32 states have call predecessors, (163), 36 states have return successors, (236), 162 states have call predecessors, (236), 162 states have call successors, (236) [2022-11-18 20:24:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 864 transitions. [2022-11-18 20:24:44,881 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 864 transitions. Word has length 135 [2022-11-18 20:24:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:44,882 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 864 transitions. [2022-11-18 20:24:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.193548387096774) internal successors, (161), 30 states have internal predecessors, (161), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-18 20:24:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 864 transitions. [2022-11-18 20:24:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:24:44,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:44,887 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:24:44,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:45,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 20:24:45,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1127341084, now seen corresponding path program 1 times [2022-11-18 20:24:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:45,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241506491] [2022-11-18 20:24:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:24:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:24:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:24:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:24:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:24:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:24:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:24:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:24:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:24:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:24:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:24:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:24:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:24:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 30 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:24:49,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:49,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241506491] [2022-11-18 20:24:49,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241506491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:49,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650218574] [2022-11-18 20:24:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:49,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:49,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:49,406 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:49,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:24:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:50,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-18 20:24:50,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:50,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:24:54,782 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:24:54,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2022-11-18 20:24:54,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:25:02,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:25:02,534 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-11-18 20:25:02,535 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 63 treesize of output 55 [2022-11-18 20:25:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:25:03,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:05,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650218574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:05,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:25:05,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 40 [2022-11-18 20:25:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501327371] [2022-11-18 20:25:05,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:05,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:25:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:25:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2433, Unknown=5, NotChecked=0, Total=2652 [2022-11-18 20:25:05,480 INFO L87 Difference]: Start difference. First operand 607 states and 864 transitions. Second operand has 40 states, 37 states have (on average 4.405405405405405) internal successors, (163), 37 states have internal predecessors, (163), 18 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 13 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-18 20:25:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:21,760 INFO L93 Difference]: Finished difference Result 1095 states and 1538 transitions. [2022-11-18 20:25:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-18 20:25:21,763 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 4.405405405405405) internal successors, (163), 37 states have internal predecessors, (163), 18 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 13 states have call predecessors, (28), 17 states have call successors, (28) Word has length 135 [2022-11-18 20:25:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:21,770 INFO L225 Difference]: With dead ends: 1095 [2022-11-18 20:25:21,771 INFO L226 Difference]: Without dead ends: 884 [2022-11-18 20:25:21,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 221 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=758, Invalid=7607, Unknown=7, NotChecked=0, Total=8372 [2022-11-18 20:25:21,776 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 705 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 5923 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 7816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 5923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1593 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:21,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 3851 Invalid, 7816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [300 Valid, 5923 Invalid, 0 Unknown, 1593 Unchecked, 8.0s Time] [2022-11-18 20:25:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-18 20:25:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 667. [2022-11-18 20:25:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 452 states have (on average 1.1305309734513274) internal successors, (511), 459 states have internal predecessors, (511), 167 states have call successors, (167), 42 states have call predecessors, (167), 47 states have return successors, (241), 165 states have call predecessors, (241), 166 states have call successors, (241) [2022-11-18 20:25:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 919 transitions. [2022-11-18 20:25:22,001 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 919 transitions. Word has length 135 [2022-11-18 20:25:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:22,002 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 919 transitions. [2022-11-18 20:25:22,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 4.405405405405405) internal successors, (163), 37 states have internal predecessors, (163), 18 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 13 states have call predecessors, (28), 17 states have call successors, (28) [2022-11-18 20:25:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 919 transitions. [2022-11-18 20:25:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:25:22,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:22,006 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:22,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:22,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:22,246 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1321112872, now seen corresponding path program 1 times [2022-11-18 20:25:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:22,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360933328] [2022-11-18 20:25:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:22,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:25:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:27,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:25:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:27,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:25:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:27,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:25:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:25:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:25:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:25:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:25:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:25:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:25:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:25:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:25:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:25:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:25:29,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:29,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360933328] [2022-11-18 20:25:29,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360933328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:29,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303901150] [2022-11-18 20:25:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:29,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:29,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:29,114 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:29,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:25:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:31,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-18 20:25:31,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:34,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:25:34,303 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-18 20:25:34,303 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 58 treesize of output 44 [2022-11-18 20:25:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 73 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:25:35,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:38,024 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-18 20:25:38,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 1 [2022-11-18 20:25:51,656 INFO L321 Elim1Store]: treesize reduction 12, result has 80.0 percent of original size [2022-11-18 20:25:51,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 77 [2022-11-18 20:25:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-18 20:25:52,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303901150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:52,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:52,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 18] total 59 [2022-11-18 20:25:52,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51136898] [2022-11-18 20:25:52,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:52,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 20:25:52,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:52,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 20:25:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3186, Unknown=1, NotChecked=0, Total=3422 [2022-11-18 20:25:52,137 INFO L87 Difference]: Start difference. First operand 667 states and 919 transitions. Second operand has 59 states, 55 states have (on average 3.7454545454545456) internal successors, (206), 55 states have internal predecessors, (206), 20 states have call successors, (42), 5 states have call predecessors, (42), 12 states have return successors, (41), 15 states have call predecessors, (41), 19 states have call successors, (41) [2022-11-18 20:26:39,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:39,439 INFO L93 Difference]: Finished difference Result 2092 states and 3330 transitions. [2022-11-18 20:26:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-11-18 20:26:39,440 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 55 states have (on average 3.7454545454545456) internal successors, (206), 55 states have internal predecessors, (206), 20 states have call successors, (42), 5 states have call predecessors, (42), 12 states have return successors, (41), 15 states have call predecessors, (41), 19 states have call successors, (41) Word has length 135 [2022-11-18 20:26:39,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:39,455 INFO L225 Difference]: With dead ends: 2092 [2022-11-18 20:26:39,455 INFO L226 Difference]: Without dead ends: 1956 [2022-11-18 20:26:39,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 283 SyntacticMatches, 11 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6265 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=1273, Invalid=18186, Unknown=1, NotChecked=0, Total=19460 [2022-11-18 20:26:39,463 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1304 mSDsluCounter, 10089 mSDsCounter, 0 mSdLazyCounter, 19878 mSolverCounterSat, 1868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 10655 SdHoareTripleChecker+Invalid, 30001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1868 IncrementalHoareTripleChecker+Valid, 19878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8255 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:39,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 10655 Invalid, 30001 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1868 Valid, 19878 Invalid, 0 Unknown, 8255 Unchecked, 35.5s Time] [2022-11-18 20:26:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2022-11-18 20:26:39,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1094. [2022-11-18 20:26:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 730 states have (on average 1.1287671232876713) internal successors, (824), 742 states have internal predecessors, (824), 288 states have call successors, (288), 67 states have call predecessors, (288), 75 states have return successors, (465), 284 states have call predecessors, (465), 286 states have call successors, (465) [2022-11-18 20:26:39,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1577 transitions. [2022-11-18 20:26:39,884 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1577 transitions. Word has length 135 [2022-11-18 20:26:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:39,884 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1577 transitions. [2022-11-18 20:26:39,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 55 states have (on average 3.7454545454545456) internal successors, (206), 55 states have internal predecessors, (206), 20 states have call successors, (42), 5 states have call predecessors, (42), 12 states have return successors, (41), 15 states have call predecessors, (41), 19 states have call successors, (41) [2022-11-18 20:26:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1577 transitions. [2022-11-18 20:26:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:26:39,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:39,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:39,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:26:40,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:26:40,101 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:26:40,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:40,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1579278310, now seen corresponding path program 1 times [2022-11-18 20:26:40,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:40,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23379872] [2022-11-18 20:26:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:40,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:26:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:26:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:26:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:26:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:26:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:26:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:26:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:26:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:26:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:26:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:26:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:26:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:26:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:26:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:26:40,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:40,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23379872] [2022-11-18 20:26:40,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23379872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:40,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:40,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:26:40,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935837054] [2022-11-18 20:26:40,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:40,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:26:40,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:26:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:26:40,743 INFO L87 Difference]: Start difference. First operand 1094 states and 1577 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-18 20:26:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:42,022 INFO L93 Difference]: Finished difference Result 1405 states and 2025 transitions. [2022-11-18 20:26:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:26:42,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2022-11-18 20:26:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:42,032 INFO L225 Difference]: With dead ends: 1405 [2022-11-18 20:26:42,032 INFO L226 Difference]: Without dead ends: 1116 [2022-11-18 20:26:42,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:26:42,036 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 131 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:42,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 755 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:26:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-11-18 20:26:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1087. [2022-11-18 20:26:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 724 states have (on average 1.1243093922651934) internal successors, (814), 735 states have internal predecessors, (814), 288 states have call successors, (288), 67 states have call predecessors, (288), 74 states have return successors, (441), 284 states have call predecessors, (441), 286 states have call successors, (441) [2022-11-18 20:26:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1543 transitions. [2022-11-18 20:26:42,467 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1543 transitions. Word has length 135 [2022-11-18 20:26:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:42,468 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 1543 transitions. [2022-11-18 20:26:42,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-18 20:26:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1543 transitions. [2022-11-18 20:26:42,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:26:42,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:42,473 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:42,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:26:42,474 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:26:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash -585947032, now seen corresponding path program 1 times [2022-11-18 20:26:42,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:42,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778976723] [2022-11-18 20:26:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:42,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:26:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:26:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:26:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:26:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:26:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:26:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:26:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:26:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:26:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:26:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:26:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:26:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:26:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:26:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:26:45,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:45,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778976723] [2022-11-18 20:26:45,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778976723] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:26:45,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261153510] [2022-11-18 20:26:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:45,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:45,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:45,207 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:26:45,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:26:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:47,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-18 20:26:47,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:47,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:26:47,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:26:48,873 INFO L321 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2022-11-18 20:26:48,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 53 [2022-11-18 20:27:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:27:16,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:27:16,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261153510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:16,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:27:16,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 31 [2022-11-18 20:27:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536901343] [2022-11-18 20:27:16,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:27:16,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:27:16,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:16,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:27:16,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1323, Unknown=2, NotChecked=0, Total=1482 [2022-11-18 20:27:16,967 INFO L87 Difference]: Start difference. First operand 1087 states and 1543 transitions. Second operand has 31 states, 28 states have (on average 4.535714285714286) internal successors, (127), 29 states have internal predecessors, (127), 10 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (27), 7 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-18 20:27:43,838 WARN L233 SmtUtils]: Spent 18.96s on a formula simplification. DAG size of input: 52 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:27:53,698 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:27:59,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:59,322 INFO L93 Difference]: Finished difference Result 1808 states and 2667 transitions. [2022-11-18 20:27:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:27:59,323 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.535714285714286) internal successors, (127), 29 states have internal predecessors, (127), 10 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (27), 7 states have call predecessors, (27), 9 states have call successors, (27) Word has length 135 [2022-11-18 20:27:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:59,333 INFO L225 Difference]: With dead ends: 1808 [2022-11-18 20:27:59,333 INFO L226 Difference]: Without dead ends: 1585 [2022-11-18 20:27:59,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 171 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 61.2s TimeCoverageRelationStatistics Valid=431, Invalid=3598, Unknown=3, NotChecked=0, Total=4032 [2022-11-18 20:27:59,337 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 605 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 6228 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 3965 SdHoareTripleChecker+Invalid, 7230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 6228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 598 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:59,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 3965 Invalid, 7230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [404 Valid, 6228 Invalid, 0 Unknown, 598 Unchecked, 7.3s Time] [2022-11-18 20:27:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-11-18 20:27:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1163. [2022-11-18 20:27:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 791 states have (on average 1.1213653603034135) internal successors, (887), 805 states have internal predecessors, (887), 290 states have call successors, (290), 73 states have call predecessors, (290), 81 states have return successors, (431), 284 states have call predecessors, (431), 288 states have call successors, (431) [2022-11-18 20:27:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1608 transitions. [2022-11-18 20:27:59,788 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1608 transitions. Word has length 135 [2022-11-18 20:27:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:59,788 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1608 transitions. [2022-11-18 20:27:59,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.535714285714286) internal successors, (127), 29 states have internal predecessors, (127), 10 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (27), 7 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-18 20:27:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1608 transitions. [2022-11-18 20:27:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 20:27:59,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:59,794 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:59,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:00,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:00,006 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:00,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1815716846, now seen corresponding path program 1 times [2022-11-18 20:28:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:00,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818592662] [2022-11-18 20:28:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:00,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:28:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:28:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:28:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:28:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:28:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:28:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:28:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:28:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:28:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:28:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:28:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 20:28:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 20:28:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:28:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:02,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818592662] [2022-11-18 20:28:02,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818592662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:02,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919183123] [2022-11-18 20:28:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:02,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:02,735 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:02,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:28:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 20:28:03,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:03,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:28:03,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:28:04,469 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:28:04,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 20:28:04,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:28:04,488 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 20:28:04,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:28:04,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:28:04,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 20:28:06,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:28:06,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2022-11-18 20:28:06,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:28:06,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-18 20:28:06,911 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 28 treesize of output 20 [2022-11-18 20:28:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 28 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:28:07,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:07,556 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 50 treesize of output 44 [2022-11-18 20:28:07,608 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_1594 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (not (< 0 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1594) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset|) 18446744073709551616)))))) (and (forall ((v_ArrVal_1594 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (or (not (< 0 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1594) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset|) 18446744073709551616))) (= |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|))) (forall ((v_ArrVal_1594 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (or (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_#t~ite502#1.offset|)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 8)) 0) (not (< 0 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1594) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset|) 18446744073709551616))))) (or .cse0 (= |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_#t~ite502#1.base| 0)) (or .cse0 (= |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset|)))) is different from false [2022-11-18 20:28:07,645 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1594 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (or (not (< 0 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1594) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset|) 18446744073709551616))) (= |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|))) (forall ((v_ArrVal_1594 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (or (not (< 0 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1594) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset|) 18446744073709551616))) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) 0)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 8)) 0))) (or (forall ((v_ArrVal_1594 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (not (< 0 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1594) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset|) 18446744073709551616)))) (= |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset|))) is different from false [2022-11-18 20:28:07,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919183123] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:07,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:07,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2022-11-18 20:28:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576889763] [2022-11-18 20:28:07,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:07,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:28:07,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:28:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1509, Unknown=2, NotChecked=158, Total=1806 [2022-11-18 20:28:07,684 INFO L87 Difference]: Start difference. First operand 1163 states and 1608 transitions. Second operand has 37 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 29 states have internal predecessors, (155), 18 states have call successors, (35), 9 states have call predecessors, (35), 8 states have return successors, (32), 14 states have call predecessors, (32), 16 states have call successors, (32) [2022-11-18 20:28:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:17,780 INFO L93 Difference]: Finished difference Result 1832 states and 2623 transitions. [2022-11-18 20:28:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 20:28:17,781 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 29 states have internal predecessors, (155), 18 states have call successors, (35), 9 states have call predecessors, (35), 8 states have return successors, (32), 14 states have call predecessors, (32), 16 states have call successors, (32) Word has length 136 [2022-11-18 20:28:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:17,790 INFO L225 Difference]: With dead ends: 1832 [2022-11-18 20:28:17,791 INFO L226 Difference]: Without dead ends: 1593 [2022-11-18 20:28:17,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 230 SyntacticMatches, 17 SemanticMatches, 80 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1792 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=593, Invalid=5733, Unknown=2, NotChecked=314, Total=6642 [2022-11-18 20:28:17,795 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 662 mSDsluCounter, 5548 mSDsCounter, 0 mSdLazyCounter, 7526 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 5895 SdHoareTripleChecker+Invalid, 10890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 7526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2779 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:17,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 5895 Invalid, 10890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [585 Valid, 7526 Invalid, 0 Unknown, 2779 Unchecked, 7.0s Time] [2022-11-18 20:28:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-11-18 20:28:18,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1287. [2022-11-18 20:28:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 879 states have (on average 1.118316268486917) internal successors, (983), 890 states have internal predecessors, (983), 316 states have call successors, (316), 81 states have call predecessors, (316), 91 states have return successors, (464), 315 states have call predecessors, (464), 314 states have call successors, (464) [2022-11-18 20:28:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1763 transitions. [2022-11-18 20:28:18,264 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1763 transitions. Word has length 136 [2022-11-18 20:28:18,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:18,264 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1763 transitions. [2022-11-18 20:28:18,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 29 states have internal predecessors, (155), 18 states have call successors, (35), 9 states have call predecessors, (35), 8 states have return successors, (32), 14 states have call predecessors, (32), 16 states have call successors, (32) [2022-11-18 20:28:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1763 transitions. [2022-11-18 20:28:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 20:28:18,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:18,270 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:18,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:18,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:28:18,479 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2135982254, now seen corresponding path program 1 times [2022-11-18 20:28:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:18,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514860192] [2022-11-18 20:28:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:18,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:28:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:28:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:28:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:28:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:28:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:28:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:28:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:28:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:28:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:28:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:28:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 20:28:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 20:28:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 20:28:23,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:23,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514860192] [2022-11-18 20:28:23,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514860192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:23,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:23,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 20:28:23,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452393473] [2022-11-18 20:28:23,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:23,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:28:23,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:23,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:28:23,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:28:23,058 INFO L87 Difference]: Start difference. First operand 1287 states and 1763 transitions. Second operand has 17 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 10 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-18 20:28:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:26,844 INFO L93 Difference]: Finished difference Result 1391 states and 1911 transitions. [2022-11-18 20:28:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:28:26,845 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 10 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) Word has length 136 [2022-11-18 20:28:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:26,852 INFO L225 Difference]: With dead ends: 1391 [2022-11-18 20:28:26,852 INFO L226 Difference]: Without dead ends: 1389 [2022-11-18 20:28:26,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:28:26,854 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 426 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:26,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1451 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:28:26,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2022-11-18 20:28:27,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1307. [2022-11-18 20:28:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 891 states have (on average 1.1178451178451179) internal successors, (996), 902 states have internal predecessors, (996), 321 states have call successors, (321), 84 states have call predecessors, (321), 94 states have return successors, (469), 320 states have call predecessors, (469), 319 states have call successors, (469) [2022-11-18 20:28:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1786 transitions. [2022-11-18 20:28:27,216 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1786 transitions. Word has length 136 [2022-11-18 20:28:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:27,217 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1786 transitions. [2022-11-18 20:28:27,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 10 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-18 20:28:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1786 transitions. [2022-11-18 20:28:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 20:28:27,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:27,222 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:27,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:28:27,223 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:27,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:27,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1395990888, now seen corresponding path program 1 times [2022-11-18 20:28:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:27,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245699954] [2022-11-18 20:28:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:28:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:28:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:28:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:28:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:28:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:28:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:28:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:28:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:28:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:28:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:28:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:28:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 20:28:28,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:28,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245699954] [2022-11-18 20:28:28,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245699954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:28,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924246389] [2022-11-18 20:28:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:28,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:28,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:28,013 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:28,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:28:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 20:28:28,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:28:28,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:28,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924246389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:28,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:28,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-11-18 20:28:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508849257] [2022-11-18 20:28:28,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:28:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:28:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:28:28,683 INFO L87 Difference]: Start difference. First operand 1307 states and 1786 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 20:28:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:29,266 INFO L93 Difference]: Finished difference Result 2128 states and 2940 transitions. [2022-11-18 20:28:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:28:29,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 139 [2022-11-18 20:28:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:29,274 INFO L225 Difference]: With dead ends: 2128 [2022-11-18 20:28:29,275 INFO L226 Difference]: Without dead ends: 1307 [2022-11-18 20:28:29,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:29,280 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 12 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:29,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2464 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:28:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-11-18 20:28:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1303. [2022-11-18 20:28:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 888 states have (on average 1.1182432432432432) internal successors, (993), 898 states have internal predecessors, (993), 321 states have call successors, (321), 84 states have call predecessors, (321), 93 states have return successors, (459), 320 states have call predecessors, (459), 319 states have call successors, (459) [2022-11-18 20:28:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1773 transitions. [2022-11-18 20:28:29,710 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1773 transitions. Word has length 139 [2022-11-18 20:28:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:29,711 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1773 transitions. [2022-11-18 20:28:29,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 20:28:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1773 transitions. [2022-11-18 20:28:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-18 20:28:29,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:29,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:28:29,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-18 20:28:29,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:28:29,926 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -591306961, now seen corresponding path program 1 times [2022-11-18 20:28:29,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:29,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211715937] [2022-11-18 20:28:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:29,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:28:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:28:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:28:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:28:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:28:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:28:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:28:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:28:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:28:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:28:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:28:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:28:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 9 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:28:33,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:33,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211715937] [2022-11-18 20:28:33,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211715937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:33,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106482637] [2022-11-18 20:28:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:33,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:33,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:33,107 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:33,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:28:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-18 20:28:33,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:33,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:28:33,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:28:35,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:28:35,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:28:35,312 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:28:35,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-18 20:28:35,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-18 20:28:37,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:28:37,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2022-11-18 20:28:37,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:28:37,875 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 22 treesize of output 21 [2022-11-18 20:28:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 63 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:28:38,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:40,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106482637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:40,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:40,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 32] total 51 [2022-11-18 20:28:40,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835943647] [2022-11-18 20:28:40,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:40,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:28:40,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:40,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:28:40,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=4329, Unknown=6, NotChecked=0, Total=4556 [2022-11-18 20:28:40,995 INFO L87 Difference]: Start difference. First operand 1303 states and 1773 transitions. Second operand has 51 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 43 states have internal predecessors, (166), 14 states have call successors, (28), 6 states have call predecessors, (28), 11 states have return successors, (27), 12 states have call predecessors, (27), 13 states have call successors, (27) [2022-11-18 20:28:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:51,705 INFO L93 Difference]: Finished difference Result 1548 states and 2102 transitions. [2022-11-18 20:28:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-18 20:28:51,705 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 43 states have internal predecessors, (166), 14 states have call successors, (28), 6 states have call predecessors, (28), 11 states have return successors, (27), 12 states have call predecessors, (27), 13 states have call successors, (27) Word has length 137 [2022-11-18 20:28:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:51,714 INFO L225 Difference]: With dead ends: 1548 [2022-11-18 20:28:51,714 INFO L226 Difference]: Without dead ends: 1541 [2022-11-18 20:28:51,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 199 SyntacticMatches, 15 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=568, Invalid=12308, Unknown=6, NotChecked=0, Total=12882 [2022-11-18 20:28:51,717 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 314 mSDsluCounter, 7205 mSDsCounter, 0 mSdLazyCounter, 6465 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 7503 SdHoareTripleChecker+Invalid, 10358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 6465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3695 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:51,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 7503 Invalid, 10358 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [198 Valid, 6465 Invalid, 0 Unknown, 3695 Unchecked, 6.3s Time] [2022-11-18 20:28:51,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-11-18 20:28:52,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1379. [2022-11-18 20:28:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 954 states have (on average 1.1132075471698113) internal successors, (1062), 965 states have internal predecessors, (1062), 323 states have call successors, (323), 92 states have call predecessors, (323), 101 states have return successors, (453), 321 states have call predecessors, (453), 321 states have call successors, (453) [2022-11-18 20:28:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1838 transitions. [2022-11-18 20:28:52,218 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1838 transitions. Word has length 137 [2022-11-18 20:28:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:52,219 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 1838 transitions. [2022-11-18 20:28:52,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 43 states have internal predecessors, (166), 14 states have call successors, (28), 6 states have call predecessors, (28), 11 states have return successors, (27), 12 states have call predecessors, (27), 13 states have call successors, (27) [2022-11-18 20:28:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1838 transitions. [2022-11-18 20:28:52,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-18 20:28:52,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:52,224 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:28:52,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:52,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:28:52,425 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash -25903891, now seen corresponding path program 1 times [2022-11-18 20:28:52,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:52,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468613522] [2022-11-18 20:28:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:28:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:28:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:28:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:28:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:28:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:28:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:28:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:28:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:28:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:28:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:28:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:28:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-18 20:28:53,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:53,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468613522] [2022-11-18 20:28:53,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468613522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:53,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:53,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:28:53,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696886869] [2022-11-18 20:28:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:53,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:28:53,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:28:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:28:53,177 INFO L87 Difference]: Start difference. First operand 1379 states and 1838 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-18 20:28:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:54,856 INFO L93 Difference]: Finished difference Result 1428 states and 1898 transitions. [2022-11-18 20:28:54,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:28:54,856 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 137 [2022-11-18 20:28:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:54,864 INFO L225 Difference]: With dead ends: 1428 [2022-11-18 20:28:54,864 INFO L226 Difference]: Without dead ends: 1426 [2022-11-18 20:28:54,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:28:54,866 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 135 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:54,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1650 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:28:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2022-11-18 20:28:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1392. [2022-11-18 20:28:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 960 states have (on average 1.1125) internal successors, (1068), 971 states have internal predecessors, (1068), 328 states have call successors, (328), 94 states have call predecessors, (328), 103 states have return successors, (458), 326 states have call predecessors, (458), 326 states have call successors, (458) [2022-11-18 20:28:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1854 transitions. [2022-11-18 20:28:55,296 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1854 transitions. Word has length 137 [2022-11-18 20:28:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:55,297 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 1854 transitions. [2022-11-18 20:28:55,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-18 20:28:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1854 transitions. [2022-11-18 20:28:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:28:55,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:55,302 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:55,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:28:55,302 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1221124017, now seen corresponding path program 1 times [2022-11-18 20:28:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:55,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882266912] [2022-11-18 20:28:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:28:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:28:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:28:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:28:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:28:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:28:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:28:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:28:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:28:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:28:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:28:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 20:28:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-18 20:28:56,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:56,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882266912] [2022-11-18 20:28:56,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882266912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:56,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:56,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:28:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138106244] [2022-11-18 20:28:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:56,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:28:56,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:28:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:56,830 INFO L87 Difference]: Start difference. First operand 1392 states and 1854 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-18 20:28:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:59,169 INFO L93 Difference]: Finished difference Result 1462 states and 1955 transitions. [2022-11-18 20:28:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:28:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 141 [2022-11-18 20:28:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:59,179 INFO L225 Difference]: With dead ends: 1462 [2022-11-18 20:28:59,179 INFO L226 Difference]: Without dead ends: 1460 [2022-11-18 20:28:59,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:28:59,185 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 214 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:59,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1738 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:28:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-11-18 20:28:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1400. [2022-11-18 20:28:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 966 states have (on average 1.1118012422360248) internal successors, (1074), 977 states have internal predecessors, (1074), 328 states have call successors, (328), 96 states have call predecessors, (328), 105 states have return successors, (458), 326 states have call predecessors, (458), 326 states have call successors, (458) [2022-11-18 20:28:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1860 transitions. [2022-11-18 20:28:59,591 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1860 transitions. Word has length 141 [2022-11-18 20:28:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:59,591 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 1860 transitions. [2022-11-18 20:28:59,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-18 20:28:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1860 transitions. [2022-11-18 20:28:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 20:28:59,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:59,596 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:59,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:28:59,597 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1080278013, now seen corresponding path program 1 times [2022-11-18 20:28:59,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:59,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91602352] [2022-11-18 20:28:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:59,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:01,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:29:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:29:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:29:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:29:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:29:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:29:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:29:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:29:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:29:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:29:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:29:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:29:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 20:29:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:29:02,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:02,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91602352] [2022-11-18 20:29:02,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91602352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:02,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663984900] [2022-11-18 20:29:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:02,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:02,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:02,556 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:02,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:29:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:03,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-18 20:29:03,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:10,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:29:10,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:29:10,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:29:10,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:29:10,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-11-18 20:29:24,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:29:24,213 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-11-18 20:29:24,213 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 44 treesize of output 46 [2022-11-18 20:29:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 31 proven. 44 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-18 20:29:24,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:25,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663984900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:25,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:29:25,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2022-11-18 20:29:25,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625298673] [2022-11-18 20:29:25,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:25,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:29:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:29:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1645, Unknown=1, NotChecked=0, Total=1806 [2022-11-18 20:29:25,840 INFO L87 Difference]: Start difference. First operand 1400 states and 1860 transitions. Second operand has 35 states, 33 states have (on average 4.96969696969697) internal successors, (164), 31 states have internal predecessors, (164), 16 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 13 states have call predecessors, (31), 16 states have call successors, (31) [2022-11-18 20:29:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:35,326 INFO L93 Difference]: Finished difference Result 2104 states and 2978 transitions. [2022-11-18 20:29:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:29:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.96969696969697) internal successors, (164), 31 states have internal predecessors, (164), 16 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 13 states have call predecessors, (31), 16 states have call successors, (31) Word has length 146 [2022-11-18 20:29:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:35,336 INFO L225 Difference]: With dead ends: 2104 [2022-11-18 20:29:35,337 INFO L226 Difference]: Without dead ends: 1632 [2022-11-18 20:29:35,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 238 SyntacticMatches, 17 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=448, Invalid=4521, Unknown=1, NotChecked=0, Total=4970 [2022-11-18 20:29:35,341 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 409 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 4596 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 4094 SdHoareTripleChecker+Invalid, 7138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 4596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2250 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:35,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 4094 Invalid, 7138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 4596 Invalid, 0 Unknown, 2250 Unchecked, 4.9s Time] [2022-11-18 20:29:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-11-18 20:29:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1328. [2022-11-18 20:29:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 920 states have (on average 1.1065217391304347) internal successors, (1018), 933 states have internal predecessors, (1018), 302 states have call successors, (302), 96 states have call predecessors, (302), 105 states have return successors, (422), 298 states have call predecessors, (422), 300 states have call successors, (422) [2022-11-18 20:29:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1742 transitions. [2022-11-18 20:29:35,737 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1742 transitions. Word has length 146 [2022-11-18 20:29:35,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:35,738 INFO L495 AbstractCegarLoop]: Abstraction has 1328 states and 1742 transitions. [2022-11-18 20:29:35,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.96969696969697) internal successors, (164), 31 states have internal predecessors, (164), 16 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 13 states have call predecessors, (31), 16 states have call successors, (31) [2022-11-18 20:29:35,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1742 transitions. [2022-11-18 20:29:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 20:29:35,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:35,742 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:35,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:35,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-18 20:29:35,957 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:29:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1051072709, now seen corresponding path program 1 times [2022-11-18 20:29:35,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:35,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916351121] [2022-11-18 20:29:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:29:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:29:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:29:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:29:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:29:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:29:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:29:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:29:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:39,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:29:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:40,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:29:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:29:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:29:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 20:29:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 30 proven. 33 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-18 20:29:40,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:40,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916351121] [2022-11-18 20:29:40,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916351121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:40,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397143307] [2022-11-18 20:29:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:40,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:40,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:40,497 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:40,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:29:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:41,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-18 20:29:41,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:41,166 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 [2022-11-18 20:29:41,477 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:29:41,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:29:41,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:29:42,260 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-18 20:29:42,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:29:50,775 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 19 treesize of output 21 [2022-11-18 20:30:16,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:30:16,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:30:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 34 proven. 56 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:30:20,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:23,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397143307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:23,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:23,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20] total 42 [2022-11-18 20:30:23,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881253246] [2022-11-18 20:30:23,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:23,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:30:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:30:23,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2063, Unknown=19, NotChecked=0, Total=2256 [2022-11-18 20:30:23,395 INFO L87 Difference]: Start difference. First operand 1328 states and 1742 transitions. Second operand has 42 states, 39 states have (on average 4.6923076923076925) internal successors, (183), 38 states have internal predecessors, (183), 18 states have call successors, (33), 7 states have call predecessors, (33), 11 states have return successors, (32), 16 states have call predecessors, (32), 17 states have call successors, (32) [2022-11-18 20:30:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:38,666 INFO L93 Difference]: Finished difference Result 1656 states and 2153 transitions. [2022-11-18 20:30:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-18 20:30:38,667 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 4.6923076923076925) internal successors, (183), 38 states have internal predecessors, (183), 18 states have call successors, (33), 7 states have call predecessors, (33), 11 states have return successors, (32), 16 states have call predecessors, (32), 17 states have call successors, (32) Word has length 146 [2022-11-18 20:30:38,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:38,674 INFO L225 Difference]: With dead ends: 1656 [2022-11-18 20:30:38,674 INFO L226 Difference]: Without dead ends: 1414 [2022-11-18 20:30:38,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 229 SyntacticMatches, 22 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 53.9s TimeCoverageRelationStatistics Valid=508, Invalid=6778, Unknown=24, NotChecked=0, Total=7310 [2022-11-18 20:30:38,678 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 380 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 3024 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 4594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1443 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:38,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 3207 Invalid, 4594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3024 Invalid, 0 Unknown, 1443 Unchecked, 2.8s Time] [2022-11-18 20:30:38,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-11-18 20:30:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1329. [2022-11-18 20:30:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 917 states have (on average 1.103598691384951) internal successors, (1012), 928 states have internal predecessors, (1012), 302 states have call successors, (302), 101 states have call predecessors, (302), 109 states have return successors, (390), 299 states have call predecessors, (390), 300 states have call successors, (390) [2022-11-18 20:30:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1704 transitions. [2022-11-18 20:30:39,064 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1704 transitions. Word has length 146 [2022-11-18 20:30:39,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:39,065 INFO L495 AbstractCegarLoop]: Abstraction has 1329 states and 1704 transitions. [2022-11-18 20:30:39,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 4.6923076923076925) internal successors, (183), 38 states have internal predecessors, (183), 18 states have call successors, (33), 7 states have call predecessors, (33), 11 states have return successors, (32), 16 states have call predecessors, (32), 17 states have call successors, (32) [2022-11-18 20:30:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1704 transitions. [2022-11-18 20:30:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-18 20:30:39,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:39,069 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:39,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-18 20:30:39,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:39,281 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:30:39,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 676770401, now seen corresponding path program 1 times [2022-11-18 20:30:39,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:39,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994014346] [2022-11-18 20:30:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:39,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:30:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:30:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:30:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:30:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:30:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:30:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:30:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:30:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:30:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:30:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:30:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:30:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 20:30:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 20:30:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:30:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 20:30:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:30:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:30:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:30:43,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:43,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994014346] [2022-11-18 20:30:43,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994014346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:43,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735805545] [2022-11-18 20:30:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:43,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:43,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:43,143 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:43,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:30:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:43,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-18 20:30:43,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:43,809 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 [2022-11-18 20:30:44,041 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:30:44,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:30:44,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:30:44,505 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:30:44,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:30:45,270 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:30:45,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 32 [2022-11-18 20:30:45,285 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:30:45,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2022-11-18 20:30:48,752 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:30:48,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-18 20:30:48,759 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:30:48,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 16 [2022-11-18 20:30:48,943 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:30:48,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 41 [2022-11-18 20:30:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:30:49,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:49,260 INFO L321 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-11-18 20:30:49,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 94 [2022-11-18 20:30:50,004 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset| 8)) (.cse1 (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 8))) (and (forall ((v_ArrVal_2179 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_2179))) (= (select (select .cse0 |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) .cse1) (select (select .cse0 |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base|) .cse2)))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_#t~ite502#1.offset|)))) (= (select (select .cse3 |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base|) .cse2) (select (select .cse3 |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) .cse1))))) is different from false [2022-11-18 20:30:50,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735805545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:50,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:30:50,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 28] total 40 [2022-11-18 20:30:50,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544775011] [2022-11-18 20:30:50,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:50,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:30:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:50,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:30:50,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2044, Unknown=43, NotChecked=92, Total=2352 [2022-11-18 20:30:50,415 INFO L87 Difference]: Start difference. First operand 1329 states and 1704 transitions. Second operand has 40 states, 35 states have (on average 4.514285714285714) internal successors, (158), 32 states have internal predecessors, (158), 18 states have call successors, (38), 11 states have call predecessors, (38), 10 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) [2022-11-18 20:30:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:54,446 INFO L93 Difference]: Finished difference Result 1725 states and 2125 transitions. [2022-11-18 20:30:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:30:54,446 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 4.514285714285714) internal successors, (158), 32 states have internal predecessors, (158), 18 states have call successors, (38), 11 states have call predecessors, (38), 10 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) Word has length 147 [2022-11-18 20:30:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:54,470 INFO L225 Difference]: With dead ends: 1725 [2022-11-18 20:30:54,470 INFO L226 Difference]: Without dead ends: 1723 [2022-11-18 20:30:54,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 230 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=377, Invalid=4408, Unknown=49, NotChecked=136, Total=4970 [2022-11-18 20:30:54,473 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 448 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1788 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:54,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 3571 Invalid, 4979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2805 Invalid, 0 Unknown, 1788 Unchecked, 2.5s Time] [2022-11-18 20:30:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2022-11-18 20:30:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1629. [2022-11-18 20:30:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1150 states have (on average 1.0930434782608696) internal successors, (1257), 1168 states have internal predecessors, (1257), 331 states have call successors, (331), 138 states have call predecessors, (331), 147 states have return successors, (419), 322 states have call predecessors, (419), 329 states have call successors, (419) [2022-11-18 20:30:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2007 transitions. [2022-11-18 20:30:54,849 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2007 transitions. Word has length 147 [2022-11-18 20:30:54,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:54,850 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2007 transitions. [2022-11-18 20:30:54,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 4.514285714285714) internal successors, (158), 32 states have internal predecessors, (158), 18 states have call successors, (38), 11 states have call predecessors, (38), 10 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) [2022-11-18 20:30:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2007 transitions. [2022-11-18 20:30:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-18 20:30:54,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:54,855 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:54,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:55,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:55,066 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:30:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1996907536, now seen corresponding path program 1 times [2022-11-18 20:30:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:55,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018577962] [2022-11-18 20:30:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:30:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:30:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:57,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:30:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:30:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:30:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:30:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:30:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:30:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:30:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:30:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:30:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:30:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:30:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:30:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 20:30:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:30:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-18 20:30:58,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:58,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018577962] [2022-11-18 20:30:58,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018577962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:58,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849829264] [2022-11-18 20:30:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:58,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:58,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:58,192 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:58,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:30:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-18 20:30:58,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:59,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:31:07,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:31:08,000 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-18 20:31:08,001 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 1 case distinctions, treesize of input 22 treesize of output 25 [2022-11-18 20:31:26,298 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 16 treesize of output 8 [2022-11-18 20:31:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:31:26,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:34,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849829264] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:34,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:31:34,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27] total 47 [2022-11-18 20:31:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047526813] [2022-11-18 20:31:34,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:34,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 20:31:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 20:31:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=3005, Unknown=4, NotChecked=0, Total=3192 [2022-11-18 20:31:34,092 INFO L87 Difference]: Start difference. First operand 1629 states and 2007 transitions. Second operand has 47 states, 43 states have (on average 3.8372093023255816) internal successors, (165), 40 states have internal predecessors, (165), 17 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (31), 16 states have call predecessors, (31), 15 states have call successors, (31) [2022-11-18 20:31:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:51,696 INFO L93 Difference]: Finished difference Result 1928 states and 2379 transitions. [2022-11-18 20:31:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-18 20:31:51,696 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 3.8372093023255816) internal successors, (165), 40 states have internal predecessors, (165), 17 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (31), 16 states have call predecessors, (31), 15 states have call successors, (31) Word has length 147 [2022-11-18 20:31:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:51,702 INFO L225 Difference]: With dead ends: 1928 [2022-11-18 20:31:51,702 INFO L226 Difference]: Without dead ends: 1921 [2022-11-18 20:31:51,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 214 SyntacticMatches, 20 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2775 ImplicationChecksByTransitivity, 47.6s TimeCoverageRelationStatistics Valid=637, Invalid=10485, Unknown=8, NotChecked=0, Total=11130 [2022-11-18 20:31:51,706 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 201 mSDsluCounter, 4632 mSDsCounter, 0 mSdLazyCounter, 4843 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 4857 SdHoareTripleChecker+Invalid, 8049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 4843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3056 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:51,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 4857 Invalid, 8049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 4843 Invalid, 0 Unknown, 3056 Unchecked, 4.0s Time] [2022-11-18 20:31:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2022-11-18 20:31:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1708. [2022-11-18 20:31:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1205 states have (on average 1.0937759336099586) internal successors, (1318), 1224 states have internal predecessors, (1318), 338 states have call successors, (338), 152 states have call predecessors, (338), 164 states have return successors, (436), 331 states have call predecessors, (436), 336 states have call successors, (436) [2022-11-18 20:31:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2092 transitions. [2022-11-18 20:31:52,304 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2092 transitions. Word has length 147 [2022-11-18 20:31:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:52,305 INFO L495 AbstractCegarLoop]: Abstraction has 1708 states and 2092 transitions. [2022-11-18 20:31:52,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 3.8372093023255816) internal successors, (165), 40 states have internal predecessors, (165), 17 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (31), 16 states have call predecessors, (31), 15 states have call successors, (31) [2022-11-18 20:31:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2092 transitions. [2022-11-18 20:31:52,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 20:31:52,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:52,310 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:52,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:52,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:52,527 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:52,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:52,527 INFO L85 PathProgramCache]: Analyzing trace with hash 456187319, now seen corresponding path program 1 times [2022-11-18 20:31:52,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:52,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206981444] [2022-11-18 20:31:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:52,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:31:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:31:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:31:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:31:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:31:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:31:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:31:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:31:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:31:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:31:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:31:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:31:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 20:31:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:31:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:31:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-18 20:31:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:31:54,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:54,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206981444] [2022-11-18 20:31:54,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206981444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:54,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690468386] [2022-11-18 20:31:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:54,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:54,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:54,762 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:54,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:31:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:55,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 20:31:55,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:55,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:31:55,784 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 [2022-11-18 20:31:56,999 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:31:57,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 20:31:57,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 20:31:57,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:31:57,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:31:59,503 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-18 20:31:59,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34 [2022-11-18 20:32:00,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:32:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 37 proven. 50 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:32:00,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:00,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690468386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:00,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:32:00,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 37 [2022-11-18 20:32:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571703872] [2022-11-18 20:32:00,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:00,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:32:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:00,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:32:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1808, Unknown=3, NotChecked=0, Total=1980 [2022-11-18 20:32:00,949 INFO L87 Difference]: Start difference. First operand 1708 states and 2092 transitions. Second operand has 37 states, 36 states have (on average 4.388888888888889) internal successors, (158), 31 states have internal predecessors, (158), 18 states have call successors, (40), 8 states have call predecessors, (40), 10 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) [2022-11-18 20:32:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:11,908 INFO L93 Difference]: Finished difference Result 2315 states and 2784 transitions. [2022-11-18 20:32:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 20:32:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.388888888888889) internal successors, (158), 31 states have internal predecessors, (158), 18 states have call successors, (40), 8 states have call predecessors, (40), 10 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) Word has length 152 [2022-11-18 20:32:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:11,912 INFO L225 Difference]: With dead ends: 2315 [2022-11-18 20:32:11,912 INFO L226 Difference]: Without dead ends: 1988 [2022-11-18 20:32:11,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 239 SyntacticMatches, 17 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=416, Invalid=4690, Unknown=6, NotChecked=0, Total=5112 [2022-11-18 20:32:11,914 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 642 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 6825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2506 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:11,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 3426 Invalid, 6825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 3809 Invalid, 0 Unknown, 2506 Unchecked, 3.1s Time] [2022-11-18 20:32:11,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-11-18 20:32:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1880. [2022-11-18 20:32:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1355 states have (on average 1.088560885608856) internal successors, (1475), 1380 states have internal predecessors, (1475), 332 states have call successors, (332), 173 states have call predecessors, (332), 192 states have return successors, (424), 326 states have call predecessors, (424), 328 states have call successors, (424) [2022-11-18 20:32:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2231 transitions. [2022-11-18 20:32:12,322 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2231 transitions. Word has length 152 [2022-11-18 20:32:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:12,322 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 2231 transitions. [2022-11-18 20:32:12,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.388888888888889) internal successors, (158), 31 states have internal predecessors, (158), 18 states have call successors, (40), 8 states have call predecessors, (40), 10 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) [2022-11-18 20:32:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2231 transitions. [2022-11-18 20:32:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 20:32:12,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:12,327 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:12,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-18 20:32:12,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 20:32:12,537 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:12,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1621475623, now seen corresponding path program 1 times [2022-11-18 20:32:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:12,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533476550] [2022-11-18 20:32:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:12,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:32:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:32:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:32:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:32:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:32:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:32:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:32:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:32:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:32:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:32:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:32:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:32:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:32:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:32:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:32:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-18 20:32:14,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:14,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533476550] [2022-11-18 20:32:14,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533476550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:14,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420542645] [2022-11-18 20:32:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:14,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:14,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:14,447 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:14,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:32:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:15,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 20:32:15,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:15,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:32:16,350 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:32:16,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-18 20:32:16,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-18 20:32:16,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:32:16,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:32:18,872 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 20 treesize of output 8 [2022-11-18 20:32:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:32:19,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:21,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420542645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:21,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:32:21,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 27] total 39 [2022-11-18 20:32:21,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456677056] [2022-11-18 20:32:21,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:21,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:32:21,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:21,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:32:21,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2656, Unknown=5, NotChecked=0, Total=2862 [2022-11-18 20:32:21,826 INFO L87 Difference]: Start difference. First operand 1880 states and 2231 transitions. Second operand has 39 states, 35 states have (on average 5.4) internal successors, (189), 31 states have internal predecessors, (189), 13 states have call successors, (34), 9 states have call predecessors, (34), 11 states have return successors, (33), 9 states have call predecessors, (33), 13 states have call successors, (33) [2022-11-18 20:32:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:26,353 INFO L93 Difference]: Finished difference Result 2167 states and 2608 transitions. [2022-11-18 20:32:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:32:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 5.4) internal successors, (189), 31 states have internal predecessors, (189), 13 states have call successors, (34), 9 states have call predecessors, (34), 11 states have return successors, (33), 9 states have call predecessors, (33), 13 states have call successors, (33) Word has length 150 [2022-11-18 20:32:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:26,357 INFO L225 Difference]: With dead ends: 2167 [2022-11-18 20:32:26,357 INFO L226 Difference]: Without dead ends: 2051 [2022-11-18 20:32:26,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 242 SyntacticMatches, 15 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=398, Invalid=5449, Unknown=5, NotChecked=0, Total=5852 [2022-11-18 20:32:26,359 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 376 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 3965 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2400 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:26,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 3965 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2288 Invalid, 0 Unknown, 2400 Unchecked, 2.2s Time] [2022-11-18 20:32:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-11-18 20:32:26,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1875. [2022-11-18 20:32:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1350 states have (on average 1.085925925925926) internal successors, (1466), 1372 states have internal predecessors, (1466), 332 states have call successors, (332), 176 states have call predecessors, (332), 192 states have return successors, (420), 326 states have call predecessors, (420), 328 states have call successors, (420) [2022-11-18 20:32:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2218 transitions. [2022-11-18 20:32:26,871 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2218 transitions. Word has length 150 [2022-11-18 20:32:26,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:26,872 INFO L495 AbstractCegarLoop]: Abstraction has 1875 states and 2218 transitions. [2022-11-18 20:32:26,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 5.4) internal successors, (189), 31 states have internal predecessors, (189), 13 states have call successors, (34), 9 states have call predecessors, (34), 11 states have return successors, (33), 9 states have call predecessors, (33), 13 states have call successors, (33) [2022-11-18 20:32:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2218 transitions. [2022-11-18 20:32:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 20:32:26,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:26,877 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:26,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:32:27,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 20:32:27,087 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:27,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1619167015, now seen corresponding path program 1 times [2022-11-18 20:32:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:27,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410543181] [2022-11-18 20:32:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:27,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:32:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:32:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:32:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:32:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:32:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:32:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:32:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:32:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:32:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:32:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:32:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:32:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:32:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:32:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:32:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-18 20:32:29,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:29,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410543181] [2022-11-18 20:32:29,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410543181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:29,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008954242] [2022-11-18 20:32:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:29,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:29,789 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:29,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:32:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:30,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-18 20:32:30,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:30,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:32:30,937 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:32:30,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-11-18 20:32:30,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:32:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 34 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:32:32,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:35,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008954242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:35,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:32:35,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 31 [2022-11-18 20:32:35,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797230391] [2022-11-18 20:32:35,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:35,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:32:35,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:32:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1260, Unknown=3, NotChecked=0, Total=1406 [2022-11-18 20:32:35,547 INFO L87 Difference]: Start difference. First operand 1875 states and 2218 transitions. Second operand has 31 states, 29 states have (on average 5.689655172413793) internal successors, (165), 29 states have internal predecessors, (165), 12 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 11 states have call successors, (30) [2022-11-18 20:32:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:43,349 INFO L93 Difference]: Finished difference Result 2537 states and 3181 transitions. [2022-11-18 20:32:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:32:43,350 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 5.689655172413793) internal successors, (165), 29 states have internal predecessors, (165), 12 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 11 states have call successors, (30) Word has length 150 [2022-11-18 20:32:43,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:43,357 INFO L225 Difference]: With dead ends: 2537 [2022-11-18 20:32:43,357 INFO L226 Difference]: Without dead ends: 2399 [2022-11-18 20:32:43,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 255 SyntacticMatches, 29 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=534, Invalid=4019, Unknown=3, NotChecked=0, Total=4556 [2022-11-18 20:32:43,359 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 666 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 4307 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 6278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 4307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1503 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:43,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 2749 Invalid, 6278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 4307 Invalid, 0 Unknown, 1503 Unchecked, 5.0s Time] [2022-11-18 20:32:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2022-11-18 20:32:43,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2051. [2022-11-18 20:32:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 1491 states have (on average 1.0818242790073775) internal successors, (1613), 1514 states have internal predecessors, (1613), 347 states have call successors, (347), 195 states have call predecessors, (347), 212 states have return successors, (436), 341 states have call predecessors, (436), 343 states have call successors, (436) [2022-11-18 20:32:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2396 transitions. [2022-11-18 20:32:43,836 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2396 transitions. Word has length 150 [2022-11-18 20:32:43,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:43,836 INFO L495 AbstractCegarLoop]: Abstraction has 2051 states and 2396 transitions. [2022-11-18 20:32:43,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 5.689655172413793) internal successors, (165), 29 states have internal predecessors, (165), 12 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 11 states have call successors, (30) [2022-11-18 20:32:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2396 transitions. [2022-11-18 20:32:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 20:32:43,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:43,841 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:43,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:32:44,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 20:32:44,041 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash 829286941, now seen corresponding path program 1 times [2022-11-18 20:32:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:44,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587060703] [2022-11-18 20:32:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:44,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:32:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:32:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:32:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:32:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:32:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:32:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:32:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:32:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:32:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:32:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:32:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:32:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:32:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:32:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:32:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:32:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:46,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587060703] [2022-11-18 20:32:46,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587060703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:46,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579310040] [2022-11-18 20:32:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:46,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:46,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:46,856 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:46,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:32:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:47,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-18 20:32:47,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:47,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:32:48,133 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:32:48,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-11-18 20:32:48,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 20:32:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 47 proven. 29 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:32:50,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:52,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579310040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:52,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:32:52,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 36 [2022-11-18 20:32:52,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873412983] [2022-11-18 20:32:52,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:52,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:32:52,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:52,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:32:52,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1982, Unknown=1, NotChecked=0, Total=2162 [2022-11-18 20:32:52,354 INFO L87 Difference]: Start difference. First operand 2051 states and 2396 transitions. Second operand has 36 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 17 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (34), 11 states have call predecessors, (34), 17 states have call successors, (34) [2022-11-18 20:33:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:03,972 INFO L93 Difference]: Finished difference Result 2970 states and 3667 transitions. [2022-11-18 20:33:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:33:03,972 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 17 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (34), 11 states have call predecessors, (34), 17 states have call successors, (34) Word has length 150 [2022-11-18 20:33:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:03,978 INFO L225 Difference]: With dead ends: 2970 [2022-11-18 20:33:03,978 INFO L226 Difference]: Without dead ends: 2169 [2022-11-18 20:33:03,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 252 SyntacticMatches, 22 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=731, Invalid=6240, Unknown=1, NotChecked=0, Total=6972 [2022-11-18 20:33:03,981 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 711 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 6764 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 9105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 6764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1663 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:03,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 3090 Invalid, 9105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [678 Valid, 6764 Invalid, 0 Unknown, 1663 Unchecked, 7.9s Time] [2022-11-18 20:33:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2022-11-18 20:33:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 1546. [2022-11-18 20:33:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1143 states have (on average 1.0726159230096237) internal successors, (1226), 1157 states have internal predecessors, (1226), 239 states have call successors, (239), 154 states have call predecessors, (239), 163 states have return successors, (272), 234 states have call predecessors, (272), 236 states have call successors, (272) [2022-11-18 20:33:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1737 transitions. [2022-11-18 20:33:04,371 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1737 transitions. Word has length 150 [2022-11-18 20:33:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:04,372 INFO L495 AbstractCegarLoop]: Abstraction has 1546 states and 1737 transitions. [2022-11-18 20:33:04,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 5.0) internal successors, (165), 33 states have internal predecessors, (165), 17 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (34), 11 states have call predecessors, (34), 17 states have call successors, (34) [2022-11-18 20:33:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1737 transitions. [2022-11-18 20:33:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 20:33:04,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:04,374 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:04,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 20:33:04,575 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1226526183, now seen corresponding path program 1 times [2022-11-18 20:33:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:04,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540361722] [2022-11-18 20:33:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:33:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:33:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:33:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:33:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:33:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:33:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:33:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:33:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:33:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:33:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:33:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:33:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:33:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:33:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:33:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 34 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:33:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:06,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540361722] [2022-11-18 20:33:06,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540361722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:06,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868381014] [2022-11-18 20:33:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:06,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:06,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:06,671 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:06,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:33:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:07,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-18 20:33:07,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:07,346 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 [2022-11-18 20:33:07,519 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2022-11-18 20:33:07,537 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:33:07,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:33:07,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:33:08,136 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:33:08,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:33:08,324 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 19 treesize of output 21 [2022-11-18 20:33:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 34 proven. 47 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:33:09,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:10,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868381014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:10,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:33:10,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 30 [2022-11-18 20:33:10,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345109434] [2022-11-18 20:33:10,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:10,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:33:10,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:10,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:33:10,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=996, Unknown=6, NotChecked=64, Total=1190 [2022-11-18 20:33:10,238 INFO L87 Difference]: Start difference. First operand 1546 states and 1737 transitions. Second operand has 30 states, 28 states have (on average 6.25) internal successors, (175), 27 states have internal predecessors, (175), 12 states have call successors, (35), 8 states have call predecessors, (35), 9 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) [2022-11-18 20:33:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:16,763 INFO L93 Difference]: Finished difference Result 1834 states and 2092 transitions. [2022-11-18 20:33:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:33:16,763 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 6.25) internal successors, (175), 27 states have internal predecessors, (175), 12 states have call successors, (35), 8 states have call predecessors, (35), 9 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) Word has length 150 [2022-11-18 20:33:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:16,767 INFO L225 Difference]: With dead ends: 1834 [2022-11-18 20:33:16,767 INFO L226 Difference]: Without dead ends: 1770 [2022-11-18 20:33:16,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 251 SyntacticMatches, 25 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=291, Invalid=2462, Unknown=7, NotChecked=102, Total=2862 [2022-11-18 20:33:16,771 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 435 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 4996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2112 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:16,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 3281 Invalid, 4996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2537 Invalid, 0 Unknown, 2112 Unchecked, 2.9s Time] [2022-11-18 20:33:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-11-18 20:33:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1626. [2022-11-18 20:33:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1211 states have (on average 1.0726672171758878) internal successors, (1299), 1225 states have internal predecessors, (1299), 239 states have call successors, (239), 166 states have call predecessors, (239), 175 states have return successors, (272), 234 states have call predecessors, (272), 236 states have call successors, (272) [2022-11-18 20:33:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 1810 transitions. [2022-11-18 20:33:17,220 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 1810 transitions. Word has length 150 [2022-11-18 20:33:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:17,220 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 1810 transitions. [2022-11-18 20:33:17,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 6.25) internal successors, (175), 27 states have internal predecessors, (175), 12 states have call successors, (35), 8 states have call predecessors, (35), 9 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) [2022-11-18 20:33:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 1810 transitions. [2022-11-18 20:33:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 20:33:17,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:17,224 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:17,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 20:33:17,435 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash 659036836, now seen corresponding path program 1 times [2022-11-18 20:33:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:17,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904515713] [2022-11-18 20:33:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:17,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:33:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:33:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:33:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:33:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:33:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:33:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:33:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:33:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:33:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:33:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:33:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:33:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:33:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:33:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:33:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-18 20:33:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:18,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904515713] [2022-11-18 20:33:18,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904515713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:18,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:18,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:33:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479802639] [2022-11-18 20:33:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:18,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:33:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:33:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:33:18,208 INFO L87 Difference]: Start difference. First operand 1626 states and 1810 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-18 20:33:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:20,236 INFO L93 Difference]: Finished difference Result 1674 states and 1869 transitions. [2022-11-18 20:33:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:33:20,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2022-11-18 20:33:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:20,242 INFO L225 Difference]: With dead ends: 1674 [2022-11-18 20:33:20,242 INFO L226 Difference]: Without dead ends: 1672 [2022-11-18 20:33:20,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:33:20,243 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 235 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:20,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1575 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:33:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-18 20:33:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1647. [2022-11-18 20:33:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1224 states have (on average 1.0718954248366013) internal successors, (1312), 1239 states have internal predecessors, (1312), 243 states have call successors, (243), 169 states have call predecessors, (243), 179 states have return successors, (280), 238 states have call predecessors, (280), 240 states have call successors, (280) [2022-11-18 20:33:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 1835 transitions. [2022-11-18 20:33:20,675 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 1835 transitions. Word has length 152 [2022-11-18 20:33:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:20,676 INFO L495 AbstractCegarLoop]: Abstraction has 1647 states and 1835 transitions. [2022-11-18 20:33:20,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-18 20:33:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 1835 transitions. [2022-11-18 20:33:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-18 20:33:20,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:20,678 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:20,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-18 20:33:20,679 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1743476429, now seen corresponding path program 1 times [2022-11-18 20:33:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:20,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082534928] [2022-11-18 20:33:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:33:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:33:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:33:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:33:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:33:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:33:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:33:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:33:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:33:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:33:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:33:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:33:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:33:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 20:33:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 20:33:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-18 20:33:21,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:21,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082534928] [2022-11-18 20:33:21,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082534928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:21,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:21,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:33:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979089573] [2022-11-18 20:33:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:21,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:33:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:33:21,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:33:21,301 INFO L87 Difference]: Start difference. First operand 1647 states and 1835 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:33:22,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:22,840 INFO L93 Difference]: Finished difference Result 1681 states and 1879 transitions. [2022-11-18 20:33:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:33:22,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 151 [2022-11-18 20:33:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:22,845 INFO L225 Difference]: With dead ends: 1681 [2022-11-18 20:33:22,845 INFO L226 Difference]: Without dead ends: 1679 [2022-11-18 20:33:22,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:33:22,847 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 123 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:22,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1286 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:33:22,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2022-11-18 20:33:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1657. [2022-11-18 20:33:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1230 states have (on average 1.0715447154471545) internal successors, (1318), 1246 states have internal predecessors, (1318), 245 states have call successors, (245), 170 states have call predecessors, (245), 181 states have return successors, (288), 240 states have call predecessors, (288), 242 states have call successors, (288) [2022-11-18 20:33:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 1851 transitions. [2022-11-18 20:33:23,289 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 1851 transitions. Word has length 151 [2022-11-18 20:33:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:23,289 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 1851 transitions. [2022-11-18 20:33:23,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:33:23,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 1851 transitions. [2022-11-18 20:33:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-18 20:33:23,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:23,291 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:23,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-18 20:33:23,292 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1547127637, now seen corresponding path program 1 times [2022-11-18 20:33:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:23,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529467842] [2022-11-18 20:33:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:33:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:33:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:33:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:33:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:33:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:33:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:33:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:33:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:33:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:33:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:33:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:33:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:33:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 20:33:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 20:33:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-18 20:33:25,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:25,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529467842] [2022-11-18 20:33:25,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529467842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:25,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888971000] [2022-11-18 20:33:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:25,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:25,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:25,086 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:25,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:33:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:25,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 20:33:25,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:25,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:33:30,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:33:30,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 20:33:43,759 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:33:43,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 31 [2022-11-18 20:33:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 23 proven. 63 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:33:44,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:45,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888971000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:45,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:33:45,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2022-11-18 20:33:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14678945] [2022-11-18 20:33:45,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:45,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:33:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:45,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:33:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1336, Unknown=15, NotChecked=0, Total=1482 [2022-11-18 20:33:45,316 INFO L87 Difference]: Start difference. First operand 1657 states and 1851 transitions. Second operand has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 31 states have internal predecessors, (171), 16 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) [2022-11-18 20:33:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:59,068 INFO L93 Difference]: Finished difference Result 2394 states and 2983 transitions. [2022-11-18 20:33:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 20:33:59,069 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 31 states have internal predecessors, (171), 16 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) Word has length 155 [2022-11-18 20:33:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:59,075 INFO L225 Difference]: With dead ends: 2394 [2022-11-18 20:33:59,075 INFO L226 Difference]: Without dead ends: 2251 [2022-11-18 20:33:59,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 200 SyntacticMatches, 22 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2528 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=711, Invalid=7463, Unknown=16, NotChecked=0, Total=8190 [2022-11-18 20:33:59,077 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1130 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 7137 mSolverCounterSat, 1313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 10393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1313 IncrementalHoareTripleChecker+Valid, 7137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1943 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:59,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 4143 Invalid, 10393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1313 Valid, 7137 Invalid, 0 Unknown, 1943 Unchecked, 9.1s Time] [2022-11-18 20:33:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2022-11-18 20:33:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 1738. [2022-11-18 20:33:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1287 states have (on average 1.0714840714840714) internal successors, (1379), 1306 states have internal predecessors, (1379), 264 states have call successors, (264), 174 states have call predecessors, (264), 186 states have return successors, (321), 257 states have call predecessors, (321), 261 states have call successors, (321) [2022-11-18 20:33:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 1964 transitions. [2022-11-18 20:33:59,522 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 1964 transitions. Word has length 155 [2022-11-18 20:33:59,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:59,523 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 1964 transitions. [2022-11-18 20:33:59,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 31 states have internal predecessors, (171), 16 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) [2022-11-18 20:33:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 1964 transitions. [2022-11-18 20:33:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-18 20:33:59,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:59,527 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:59,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:59,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:59,728 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:59,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash -529814404, now seen corresponding path program 1 times [2022-11-18 20:33:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:59,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512009113] [2022-11-18 20:33:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:59,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:34:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:34:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:34:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:34:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:34:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:34:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:34:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:34:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:34:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:34:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:34:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:34:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 20:34:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 20:34:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-18 20:34:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:01,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512009113] [2022-11-18 20:34:01,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512009113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:01,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:01,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:34:01,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883337266] [2022-11-18 20:34:01,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:01,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:34:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:34:01,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:34:01,110 INFO L87 Difference]: Start difference. First operand 1738 states and 1964 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:34:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:03,909 INFO L93 Difference]: Finished difference Result 1769 states and 1999 transitions. [2022-11-18 20:34:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:34:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 157 [2022-11-18 20:34:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:03,916 INFO L225 Difference]: With dead ends: 1769 [2022-11-18 20:34:03,916 INFO L226 Difference]: Without dead ends: 1767 [2022-11-18 20:34:03,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:34:03,918 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 149 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:03,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1931 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 20:34:03,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-11-18 20:34:04,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1733. [2022-11-18 20:34:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1284 states have (on average 1.071651090342679) internal successors, (1376), 1302 states have internal predecessors, (1376), 263 states have call successors, (263), 174 states have call predecessors, (263), 185 states have return successors, (310), 256 states have call predecessors, (310), 260 states have call successors, (310) [2022-11-18 20:34:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 1949 transitions. [2022-11-18 20:34:04,529 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 1949 transitions. Word has length 157 [2022-11-18 20:34:04,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:04,529 INFO L495 AbstractCegarLoop]: Abstraction has 1733 states and 1949 transitions. [2022-11-18 20:34:04,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:34:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 1949 transitions. [2022-11-18 20:34:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 20:34:04,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:04,532 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:04,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 20:34:04,532 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2088888528, now seen corresponding path program 1 times [2022-11-18 20:34:04,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:04,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482664041] [2022-11-18 20:34:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:04,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:34:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:34:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:34:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:34:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:34:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:34:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 20:34:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 20:34:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:34:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:34:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-18 20:34:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 20:34:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 18 proven. 33 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-18 20:34:07,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:07,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482664041] [2022-11-18 20:34:07,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482664041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:07,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510845975] [2022-11-18 20:34:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:07,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:07,438 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:07,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:34:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:08,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-18 20:34:08,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:08,189 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 [2022-11-18 20:34:08,420 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2022-11-18 20:34:08,447 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:34:08,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:34:08,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:34:09,037 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:34:09,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:34:13,330 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 26 treesize of output 26 [2022-11-18 20:34:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 38 proven. 54 refuted. 0 times theorem prover too weak. 36 trivial. 2 not checked. [2022-11-18 20:34:35,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:35,465 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2954 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_2954) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 16)) 18446744073709551616) 0))) is different from false [2022-11-18 20:34:35,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510845975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:35,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:34:35,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 31 [2022-11-18 20:34:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076935739] [2022-11-18 20:34:35,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:34:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:34:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1002, Unknown=3, NotChecked=130, Total=1260 [2022-11-18 20:34:35,478 INFO L87 Difference]: Start difference. First operand 1733 states and 1949 transitions. Second operand has 31 states, 29 states have (on average 6.103448275862069) internal successors, (177), 28 states have internal predecessors, (177), 12 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) [2022-11-18 20:34:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:46,787 INFO L93 Difference]: Finished difference Result 1920 states and 2187 transitions. [2022-11-18 20:34:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:34:46,788 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 6.103448275862069) internal successors, (177), 28 states have internal predecessors, (177), 12 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) Word has length 161 [2022-11-18 20:34:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:46,792 INFO L225 Difference]: With dead ends: 1920 [2022-11-18 20:34:46,792 INFO L226 Difference]: Without dead ends: 1769 [2022-11-18 20:34:46,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 265 SyntacticMatches, 27 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=278, Invalid=2377, Unknown=5, NotChecked=202, Total=2862 [2022-11-18 20:34:46,793 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 434 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1381 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:46,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1748 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1132 Invalid, 0 Unknown, 1381 Unchecked, 1.5s Time] [2022-11-18 20:34:46,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-11-18 20:34:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1716. [2022-11-18 20:34:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1265 states have (on average 1.0695652173913044) internal successors, (1353), 1283 states have internal predecessors, (1353), 263 states have call successors, (263), 176 states have call predecessors, (263), 187 states have return successors, (307), 256 states have call predecessors, (307), 260 states have call successors, (307) [2022-11-18 20:34:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 1923 transitions. [2022-11-18 20:34:47,194 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 1923 transitions. Word has length 161 [2022-11-18 20:34:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:47,194 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 1923 transitions. [2022-11-18 20:34:47,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 6.103448275862069) internal successors, (177), 28 states have internal predecessors, (177), 12 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) [2022-11-18 20:34:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 1923 transitions. [2022-11-18 20:34:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 20:34:47,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:47,197 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:47,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:47,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-18 20:34:47,397 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash 357771239, now seen corresponding path program 1 times [2022-11-18 20:34:47,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:47,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73034281] [2022-11-18 20:34:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:47,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:34:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:34:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:34:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:34:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:34:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:34:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:34:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:34:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:34:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:34:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:34:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 20:34:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 20:34:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 20:34:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:34:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-18 20:34:54,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:54,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73034281] [2022-11-18 20:34:54,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73034281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:54,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983493532] [2022-11-18 20:34:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:54,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:54,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:54,162 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:54,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c708687c-fbcb-478f-a392-e358d68d19ce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 20:34:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-18 20:34:54,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:54,981 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 [2022-11-18 20:34:55,292 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:34:55,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 20:34:55,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:34:56,167 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-18 20:34:56,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 20:34:58,305 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_247| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_247|) 0))) (and (not (= (mod .cse0 18446744073709551616) 0)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_17|) |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_17|)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_247| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_17|))))) is different from true [2022-11-18 20:34:58,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-18 20:35:00,683 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_248| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_248|) 0))) (and (not (= 0 (mod .cse0 18446744073709551616))) (not (= |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_248| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_18|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_18|))))) is different from true [2022-11-18 20:35:09,368 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_249| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_249|) 0))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_19|) |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_19|)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base_BEFORE_CALL_249| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_19|)) (not (= (mod .cse0 18446744073709551616) 0))))) is different from true [2022-11-18 20:35:16,107 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_20| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_20| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_89| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_89|) 0))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_20|) |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_20|)) (not (= (mod .cse0 18446744073709551616) 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_89| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_20|))))) is different from true [2022-11-18 20:35:18,548 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_90| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_21| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_21| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_90|) 0))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_90| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_21|)) (not (= (mod .cse0 18446744073709551616) 0)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_21|) |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_21|) .cse0)))) is different from true [2022-11-18 20:35:20,928 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_91| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_22| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_91|) 0))) (and (not (= (mod .cse0 18446744073709551616) 0)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_22|) |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_22|) .cse0) (not (= |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_91| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_22|))))) is different from true [2022-11-18 20:35:23,275 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_92| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_23| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_23| Int)) (let ((.cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_92|) 0))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_92| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_23|)) (not (= (mod .cse0 18446744073709551616) 0)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.base_BEFORE_CALL_23|) |v_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to_old~0#1.offset_BEFORE_CALL_23|))))) is different from true [2022-11-18 20:35:24,288 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-18 20:35:24,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 39 [2022-11-18 20:35:27,006 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:35:27,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 35 [2022-11-18 20:35:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 75 not checked. [2022-11-18 20:35:27,270 INFO L328 TraceCheckSpWp]: Computing backward predicates...