./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_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_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/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_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/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_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/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 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- 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 20:19:35,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:19:35,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:19:35,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:19:35,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:19:35,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:19:35,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:19:35,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:19:35,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:19:35,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:19:35,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:19:35,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:19:35,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:19:35,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:19:35,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:19:35,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:19:35,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:19:35,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:19:35,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:19:35,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:19:35,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:19:35,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:19:35,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:19:35,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:19:35,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:19:35,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:19:35,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:19:35,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:19:35,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:19:35,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:19:35,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:19:35,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:19:35,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:19:35,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:19:35,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:19:35,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:19:35,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:19:35,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:19:35,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:19:35,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:19:35,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:19:35,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:19:35,649 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:19:35,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:19:35,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:19:35,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:19:35,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:19:35,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:19:35,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:19:35,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:19:35,655 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:19:35,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:19:35,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:19:35,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:19:35,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:19:35,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:19:35,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:19:35,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:19:35,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:19:35,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:19:35,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:19:35,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:19:35,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:19:35,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:19:35,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:19:35,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:19:35,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:19:35,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:19:35,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:19:35,661 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:19:35,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:19:35,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:19:35,661 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_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2022-11-18 20:19:35,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:19:36,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:19:36,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:19:36,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:19:36,022 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:19:36,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2022-11-18 20:19:36,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/data/50af9fd38/4c50245cd4624699a1374527223e6ee9/FLAG0b8687822 [2022-11-18 20:19:37,069 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:19:37,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2022-11-18 20:19:37,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/data/50af9fd38/4c50245cd4624699a1374527223e6ee9/FLAG0b8687822 [2022-11-18 20:19:37,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/data/50af9fd38/4c50245cd4624699a1374527223e6ee9 [2022-11-18 20:19:37,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:19:37,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:19:37,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:19:37,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:19:37,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:19:37,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:19:37" (1/1) ... [2022-11-18 20:19:37,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af60ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:37, skipping insertion in model container [2022-11-18 20:19:37,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:19:37" (1/1) ... [2022-11-18 20:19:37,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:19:37,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:19:38,044 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_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2022-11-18 20:19:38,054 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_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2022-11-18 20:19:39,361 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:39,362 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:39,363 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:39,365 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:39,366 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:39,385 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:39,386 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:39,389 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:39,390 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,003 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:19:40,004 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:19:40,006 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:19:40,008 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:19:40,010 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:19:40,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:19:40,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:19:40,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:19:40,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:19:40,016 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:19:40,307 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:19:40,540 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,541 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:19:40,686 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:19:40,703 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_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2022-11-18 20:19:40,704 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_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2022-11-18 20:19:40,795 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,796 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,798 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,800 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,801 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,823 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,831 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,833 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,833 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:40,902 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:19:40,903 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:19:40,904 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:19:40,905 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:19:40,907 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:19:40,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:19:40,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:19:40,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:19:40,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:19:40,916 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:19:40,971 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:19:41,068 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:41,069 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:19:41,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:19:41,510 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:19:41,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41 WrapperNode [2022-11-18 20:19:41,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:19:41,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:19:41,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:19:41,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:19:41,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,764 INFO L138 Inliner]: procedures = 691, calls = 2614, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 773 [2022-11-18 20:19:41,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:19:41,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:19:41,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:19:41,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:19:41,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:19:41,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:19:41,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:19:41,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:19:41,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (1/1) ... [2022-11-18 20:19:41,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:19:41,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:41,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:19:41,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:19:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2022-11-18 20:19:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2022-11-18 20:19:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:19:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 20:19:42,010 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 20:19:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:19:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:19:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:19:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:19:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:19:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-18 20:19:42,014 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-18 20:19:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:19:42,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:19:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 20:19:42,015 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 20:19:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-18 20:19:42,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-18 20:19:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-18 20:19:42,016 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-18 20:19:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:19:42,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:19:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:19:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:19:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:19:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:19:42,445 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:19:42,448 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:19:44,276 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:19:44,288 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:19:44,289 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:19:44,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:44 BoogieIcfgContainer [2022-11-18 20:19:44,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:19:44,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:19:44,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:19:44,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:19:44,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:19:37" (1/3) ... [2022-11-18 20:19:44,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3112a2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:19:44, skipping insertion in model container [2022-11-18 20:19:44,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:41" (2/3) ... [2022-11-18 20:19:44,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3112a2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:19:44, skipping insertion in model container [2022-11-18 20:19:44,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:44" (3/3) ... [2022-11-18 20:19:44,304 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2022-11-18 20:19:44,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:19:44,329 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:19:44,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:19:44,446 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;@4c807079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:19:44,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:19:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 47 states have (on average 1.297872340425532) internal successors, (61), 51 states have internal predecessors, (61), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:19:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:19:44,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:44,471 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:19:44,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash 106347311, now seen corresponding path program 1 times [2022-11-18 20:19:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:44,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679812370] [2022-11-18 20:19:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:44,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:19:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:19:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:19:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:19:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:19:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:19:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:19:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:19:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-18 20:19:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:45,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679812370] [2022-11-18 20:19:45,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679812370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:45,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:45,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:19:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130797093] [2022-11-18 20:19:45,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:45,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:45,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:45,612 INFO L87 Difference]: Start difference. First operand has 77 states, 47 states have (on average 1.297872340425532) internal successors, (61), 51 states have internal predecessors, (61), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:19:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:46,122 INFO L93 Difference]: Finished difference Result 156 states and 223 transitions. [2022-11-18 20:19:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:46,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2022-11-18 20:19:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:46,137 INFO L225 Difference]: With dead ends: 156 [2022-11-18 20:19:46,138 INFO L226 Difference]: Without dead ends: 77 [2022-11-18 20:19:46,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:19:46,152 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 79 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:46,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 76 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:19:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-18 20:19:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2022-11-18 20:19:46,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 46 states have internal predecessors, (53), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-18 20:19:46,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2022-11-18 20:19:46,226 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 65 [2022-11-18 20:19:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:46,227 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2022-11-18 20:19:46,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:19:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2022-11-18 20:19:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:19:46,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:46,237 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:19:46,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:19:46,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:46,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:46,239 INFO L85 PathProgramCache]: Analyzing trace with hash -566993231, now seen corresponding path program 1 times [2022-11-18 20:19:46,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:46,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199237480] [2022-11-18 20:19:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:46,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:19:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:19:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:19:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:19:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:19:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:19:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:19:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:19:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-18 20:19:47,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:47,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199237480] [2022-11-18 20:19:47,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199237480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:47,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:47,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:19:47,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505344632] [2022-11-18 20:19:47,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:47,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:19:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:47,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:19:47,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:19:47,459 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:19:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:48,041 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2022-11-18 20:19:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:48,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2022-11-18 20:19:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:48,045 INFO L225 Difference]: With dead ends: 97 [2022-11-18 20:19:48,045 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 20:19:48,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:19:48,047 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:48,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 106 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:19:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 20:19:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2022-11-18 20:19:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 48 states have internal predecessors, (55), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-11-18 20:19:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2022-11-18 20:19:48,065 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 65 [2022-11-18 20:19:48,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:48,065 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2022-11-18 20:19:48,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:19:48,066 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2022-11-18 20:19:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:19:48,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:48,068 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:19:48,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:19:48,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:48,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1579169156, now seen corresponding path program 1 times [2022-11-18 20:19:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:48,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614251064] [2022-11-18 20:19:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:19:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:19:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:19:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:19:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:19:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:19:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:19:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:19:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:19:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614251064] [2022-11-18 20:19:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614251064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:52,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546428558] [2022-11-18 20:19:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:52,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:52,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:52,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:52,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:19:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2456 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:19:53,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-18 20:19:53,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:53,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546428558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:53,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:53,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19] total 23 [2022-11-18 20:19:53,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850244250] [2022-11-18 20:19:53,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:53,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:19:53,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:53,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:19:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:19:53,803 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:19:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:53,962 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2022-11-18 20:19:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:53,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2022-11-18 20:19:53,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:53,965 INFO L225 Difference]: With dead ends: 109 [2022-11-18 20:19:53,965 INFO L226 Difference]: Without dead ends: 93 [2022-11-18 20:19:53,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:19:53,967 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 9 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:53,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 433 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-18 20:19:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2022-11-18 20:19:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 51 states have (on average 1.196078431372549) internal successors, (61), 55 states have internal predecessors, (61), 26 states have call successors, (26), 9 states have call predecessors, (26), 10 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) [2022-11-18 20:19:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2022-11-18 20:19:53,988 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 67 [2022-11-18 20:19:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:53,989 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2022-11-18 20:19:53,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:19:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2022-11-18 20:19:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:19:54,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:54,004 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:19:54,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:19:54,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 20:19:54,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:54,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash 537595811, now seen corresponding path program 1 times [2022-11-18 20:19:54,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:54,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136077869] [2022-11-18 20:19:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:54,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:19:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:19:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:19:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:19:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:19:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:19:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:19:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:19:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-18 20:19:55,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:55,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136077869] [2022-11-18 20:19:55,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136077869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:55,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:55,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:19:55,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982032326] [2022-11-18 20:19:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:19:55,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:55,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:19:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:55,380 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:19:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:56,411 INFO L93 Difference]: Finished difference Result 140 states and 197 transitions. [2022-11-18 20:19:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:19:56,412 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2022-11-18 20:19:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:56,415 INFO L225 Difference]: With dead ends: 140 [2022-11-18 20:19:56,416 INFO L226 Difference]: Without dead ends: 126 [2022-11-18 20:19:56,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:19:56,417 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 95 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:56,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 181 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:19:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-18 20:19:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2022-11-18 20:19:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 73 states have internal predecessors, (80), 42 states have call successors, (42), 10 states have call predecessors, (42), 12 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2022-11-18 20:19:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2022-11-18 20:19:56,459 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 69 [2022-11-18 20:19:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:56,460 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2022-11-18 20:19:56,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:19:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2022-11-18 20:19:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 20:19:56,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:56,465 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-18 20:19:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:19:56,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:56,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:56,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1643615623, now seen corresponding path program 1 times [2022-11-18 20:19:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:56,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811603119] [2022-11-18 20:19:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:56,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:19:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:19:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:19:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:19:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:19:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:19:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:19:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:19:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-18 20:19:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:57,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811603119] [2022-11-18 20:19:57,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811603119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:57,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:57,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:19:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932216009] [2022-11-18 20:19:57,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:57,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:19:57,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:57,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:19:57,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:19:57,663 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 20:19:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:58,973 INFO L93 Difference]: Finished difference Result 145 states and 201 transitions. [2022-11-18 20:19:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:19:58,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2022-11-18 20:19:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:58,987 INFO L225 Difference]: With dead ends: 145 [2022-11-18 20:19:58,987 INFO L226 Difference]: Without dead ends: 117 [2022-11-18 20:19:58,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:19:58,991 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:58,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 192 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:19:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-18 20:19:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2022-11-18 20:19:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 64 states have (on average 1.1875) internal successors, (76), 69 states have internal predecessors, (76), 36 states have call successors, (36), 10 states have call predecessors, (36), 12 states have return successors, (41), 36 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-18 20:19:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 153 transitions. [2022-11-18 20:19:59,011 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 153 transitions. Word has length 70 [2022-11-18 20:19:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:59,012 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 153 transitions. [2022-11-18 20:19:59,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 20:19:59,012 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 153 transitions. [2022-11-18 20:19:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 20:19:59,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:59,014 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-11-18 20:19:59,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:19:59,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:59,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:59,015 INFO L85 PathProgramCache]: Analyzing trace with hash 510934331, now seen corresponding path program 1 times [2022-11-18 20:19:59,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:59,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130048837] [2022-11-18 20:19:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:59,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:20:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:20:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:20:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:20:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:20:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:20:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:20:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:20:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 20:20:03,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:03,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130048837] [2022-11-18 20:20:03,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130048837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:03,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926058068] [2022-11-18 20:20:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:03,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:03,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:03,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:20:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:04,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 20:20:04,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-18 20:20:05,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:20:05,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926058068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:05,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:20:05,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 29 [2022-11-18 20:20:05,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533036700] [2022-11-18 20:20:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:05,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:20:05,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:05,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:20:05,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:20:05,243 INFO L87 Difference]: Start difference. First operand 113 states and 153 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:20:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:06,214 INFO L93 Difference]: Finished difference Result 174 states and 243 transitions. [2022-11-18 20:20:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:20:06,218 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2022-11-18 20:20:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:06,220 INFO L225 Difference]: With dead ends: 174 [2022-11-18 20:20:06,220 INFO L226 Difference]: Without dead ends: 139 [2022-11-18 20:20:06,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:20:06,223 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 39 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:06,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1156 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:20:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-18 20:20:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2022-11-18 20:20:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 77 states have internal predecessors, (83), 46 states have call successors, (46), 10 states have call predecessors, (46), 13 states have return successors, (54), 46 states have call predecessors, (54), 45 states have call successors, (54) [2022-11-18 20:20:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 183 transitions. [2022-11-18 20:20:06,245 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 183 transitions. Word has length 83 [2022-11-18 20:20:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:06,246 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 183 transitions. [2022-11-18 20:20:06,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:20:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 183 transitions. [2022-11-18 20:20:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 20:20:06,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:06,249 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-11-18 20:20:06,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:06,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:06,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:06,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash -66334228, now seen corresponding path program 1 times [2022-11-18 20:20:06,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:06,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808425103] [2022-11-18 20:20:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:06,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:20:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:20:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:20:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:20:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:20:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:20:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:20:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:10,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:20:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-18 20:20:10,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:10,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808425103] [2022-11-18 20:20:10,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808425103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:10,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099941002] [2022-11-18 20:20:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:10,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:10,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:10,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:10,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:20:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:10,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 20:20:10,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:20:11,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-18 20:20:12,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099941002] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:12,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:20:12,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [24, 20] total 46 [2022-11-18 20:20:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167055052] [2022-11-18 20:20:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:12,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:20:12,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:12,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:20:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:20:12,618 INFO L87 Difference]: Start difference. First operand 131 states and 183 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:20:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:12,936 INFO L93 Difference]: Finished difference Result 151 states and 208 transitions. [2022-11-18 20:20:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:20:12,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-11-18 20:20:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:12,940 INFO L225 Difference]: With dead ends: 151 [2022-11-18 20:20:12,940 INFO L226 Difference]: Without dead ends: 149 [2022-11-18 20:20:12,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=2113, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:20:12,945 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 34 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:12,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 545 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:20:12,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-18 20:20:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2022-11-18 20:20:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 83 states have internal predecessors, (90), 48 states have call successors, (48), 12 states have call predecessors, (48), 15 states have return successors, (56), 48 states have call predecessors, (56), 47 states have call successors, (56) [2022-11-18 20:20:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 194 transitions. [2022-11-18 20:20:12,990 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 194 transitions. Word has length 94 [2022-11-18 20:20:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:12,991 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 194 transitions. [2022-11-18 20:20:12,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:20:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 194 transitions. [2022-11-18 20:20:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 20:20:12,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:12,994 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-18 20:20:13,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:13,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:13,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:13,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1874232636, now seen corresponding path program 1 times [2022-11-18 20:20:13,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:13,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297894790] [2022-11-18 20:20:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:13,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:20:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:20:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:20:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:20:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:20:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:20:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:20:14,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:14,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297894790] [2022-11-18 20:20:14,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297894790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:14,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481054355] [2022-11-18 20:20:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:14,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:14,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:14,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:14,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:20:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:15,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:20:15,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:20:16,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:20:17,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481054355] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:17,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:20:17,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17, 14] total 39 [2022-11-18 20:20:17,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783780063] [2022-11-18 20:20:17,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:17,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:20:17,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:20:17,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1359, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:20:17,127 INFO L87 Difference]: Start difference. First operand 141 states and 194 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-18 20:20:18,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:18,600 INFO L93 Difference]: Finished difference Result 176 states and 248 transitions. [2022-11-18 20:20:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:20:18,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-11-18 20:20:18,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:18,603 INFO L225 Difference]: With dead ends: 176 [2022-11-18 20:20:18,604 INFO L226 Difference]: Without dead ends: 161 [2022-11-18 20:20:18,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=192, Invalid=2160, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:20:18,606 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 130 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:18,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 625 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:20:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-18 20:20:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 150. [2022-11-18 20:20:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 87 states have internal predecessors, (94), 52 states have call successors, (52), 12 states have call predecessors, (52), 16 states have return successors, (72), 54 states have call predecessors, (72), 51 states have call successors, (72) [2022-11-18 20:20:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 218 transitions. [2022-11-18 20:20:18,639 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 218 transitions. Word has length 80 [2022-11-18 20:20:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:18,640 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 218 transitions. [2022-11-18 20:20:18,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-18 20:20:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 218 transitions. [2022-11-18 20:20:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 20:20:18,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:18,644 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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 20:20:18,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:18,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1854673709, now seen corresponding path program 1 times [2022-11-18 20:20:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:18,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419786413] [2022-11-18 20:20:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:20:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:20:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:20:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:20:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:20:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:20:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 20:20:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:20:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-18 20:20:21,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:21,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419786413] [2022-11-18 20:20:21,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419786413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:21,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531720402] [2022-11-18 20:20:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:21,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:21,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:21,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:21,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:20:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:21,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:20:21,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:20:22,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-18 20:20:23,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531720402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:23,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:23,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 37 [2022-11-18 20:20:23,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527481833] [2022-11-18 20:20:23,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:23,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:20:23,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:20:23,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1216, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:20:23,152 INFO L87 Difference]: Start difference. First operand 150 states and 218 transitions. Second operand has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2022-11-18 20:20:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:26,097 INFO L93 Difference]: Finished difference Result 199 states and 297 transitions. [2022-11-18 20:20:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:20:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) Word has length 87 [2022-11-18 20:20:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:26,101 INFO L225 Difference]: With dead ends: 199 [2022-11-18 20:20:26,101 INFO L226 Difference]: Without dead ends: 184 [2022-11-18 20:20:26,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:20:26,103 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 230 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:26,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 464 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 20:20:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-18 20:20:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 164. [2022-11-18 20:20:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 91 states have internal predecessors, (99), 62 states have call successors, (62), 12 states have call predecessors, (62), 16 states have return successors, (87), 64 states have call predecessors, (87), 61 states have call successors, (87) [2022-11-18 20:20:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 248 transitions. [2022-11-18 20:20:26,132 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 248 transitions. Word has length 87 [2022-11-18 20:20:26,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:26,132 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 248 transitions. [2022-11-18 20:20:26,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2022-11-18 20:20:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 248 transitions. [2022-11-18 20:20:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 20:20:26,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:26,135 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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 20:20:26,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:26,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:26,346 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:26,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash -108622202, now seen corresponding path program 1 times [2022-11-18 20:20:26,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:26,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432433932] [2022-11-18 20:20:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:26,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:20:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:20:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:20:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:20:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:20:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:20:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-18 20:20:27,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:27,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432433932] [2022-11-18 20:20:27,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432433932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:27,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:27,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:20:27,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66616334] [2022-11-18 20:20:27,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:27,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:20:27,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:27,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:20:27,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:20:27,059 INFO L87 Difference]: Start difference. First operand 164 states and 248 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:20:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:27,686 INFO L93 Difference]: Finished difference Result 185 states and 271 transitions. [2022-11-18 20:20:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:20:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2022-11-18 20:20:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:27,688 INFO L225 Difference]: With dead ends: 185 [2022-11-18 20:20:27,689 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 20:20:27,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:20:27,690 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 83 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:27,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 82 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 20:20:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2022-11-18 20:20:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 90 states have internal predecessors, (99), 57 states have call successors, (57), 12 states have call predecessors, (57), 16 states have return successors, (77), 61 states have call predecessors, (77), 56 states have call successors, (77) [2022-11-18 20:20:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 233 transitions. [2022-11-18 20:20:27,720 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 233 transitions. Word has length 81 [2022-11-18 20:20:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:27,720 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 233 transitions. [2022-11-18 20:20:27,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:20:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 233 transitions. [2022-11-18 20:20:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 20:20:27,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:27,723 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-11-18 20:20:27,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:20:27,724 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash -727359888, now seen corresponding path program 1 times [2022-11-18 20:20:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:27,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835088644] [2022-11-18 20:20:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:27,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:20:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:20:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:20:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:20:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:20:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:20:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:20:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:20:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 20:20:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835088644] [2022-11-18 20:20:28,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835088644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:28,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:28,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:20:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992454048] [2022-11-18 20:20:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:28,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:20:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:20:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:20:28,725 INFO L87 Difference]: Start difference. First operand 159 states and 233 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:20:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:29,639 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2022-11-18 20:20:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:20:29,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2022-11-18 20:20:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:29,642 INFO L225 Difference]: With dead ends: 183 [2022-11-18 20:20:29,642 INFO L226 Difference]: Without dead ends: 149 [2022-11-18 20:20:29,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:29,644 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 85 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:29,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 267 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:20:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-18 20:20:29,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-18 20:20:29,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 88 states have internal predecessors, (97), 49 states have call successors, (49), 12 states have call predecessors, (49), 16 states have return successors, (63), 53 states have call predecessors, (63), 47 states have call successors, (63) [2022-11-18 20:20:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 209 transitions. [2022-11-18 20:20:29,671 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 209 transitions. Word has length 86 [2022-11-18 20:20:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:29,671 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 209 transitions. [2022-11-18 20:20:29,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:20:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 209 transitions. [2022-11-18 20:20:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 20:20:29,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:29,679 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-11-18 20:20:29,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:20:29,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1085947873, now seen corresponding path program 1 times [2022-11-18 20:20:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:29,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410956180] [2022-11-18 20:20:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:29,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:20:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:20:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:20:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:20:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:20:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:20:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:20:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:20:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-18 20:20:31,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:31,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410956180] [2022-11-18 20:20:31,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410956180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:31,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100348627] [2022-11-18 20:20:31,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:31,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:31,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:31,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:31,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:20:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:32,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:20:32,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:20:33,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-18 20:20:34,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100348627] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:34,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:20:34,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17, 13] total 37 [2022-11-18 20:20:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549030399] [2022-11-18 20:20:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:34,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:20:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:20:34,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:20:34,149 INFO L87 Difference]: Start difference. First operand 149 states and 209 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-18 20:20:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:35,342 INFO L93 Difference]: Finished difference Result 189 states and 275 transitions. [2022-11-18 20:20:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:20:35,344 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 97 [2022-11-18 20:20:35,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:35,347 INFO L225 Difference]: With dead ends: 189 [2022-11-18 20:20:35,347 INFO L226 Difference]: Without dead ends: 160 [2022-11-18 20:20:35,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:20:35,351 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 124 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:35,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 671 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:20:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-18 20:20:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2022-11-18 20:20:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 89 states have internal predecessors, (99), 53 states have call successors, (53), 12 states have call predecessors, (53), 16 states have return successors, (67), 58 states have call predecessors, (67), 51 states have call successors, (67) [2022-11-18 20:20:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 219 transitions. [2022-11-18 20:20:35,385 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 219 transitions. Word has length 97 [2022-11-18 20:20:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:35,385 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 219 transitions. [2022-11-18 20:20:35,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-18 20:20:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 219 transitions. [2022-11-18 20:20:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 20:20:35,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:35,389 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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 20:20:35,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:35,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:35,600 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1647697566, now seen corresponding path program 1 times [2022-11-18 20:20:35,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:35,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263194476] [2022-11-18 20:20:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:20:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:20:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:20:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:20:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:52,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:20:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:20:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:20:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:20:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:20:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:54,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:20:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-18 20:20:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:54,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263194476] [2022-11-18 20:20:54,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263194476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:54,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292727132] [2022-11-18 20:20:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:54,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:54,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:54,200 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:54,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26cf0642-6b72-4203-ac1a-67e7f4bea1e6/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:20:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:56,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-18 20:20:56,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:56,675 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 20:20:57,069 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:20:57,069 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 20:20:57,382 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:20:57,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:20:57,617 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 20:20:57,952 INFO L321 Elim1Store]: treesize reduction 68, result has 34.0 percent of original size [2022-11-18 20:20:57,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 94 [2022-11-18 20:21:00,629 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 20 [2022-11-18 20:21:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 34 proven. 46 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:21:00,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:03,327 INFO L321 Elim1Store]: treesize reduction 747, result has 0.1 percent of original size [2022-11-18 20:21:03,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 179 treesize of output 1 [2022-11-18 20:21:23,350 WARN L233 SmtUtils]: Spent 16.32s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:21:42,288 WARN L233 SmtUtils]: Spent 16.29s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:22:01,501 WARN L233 SmtUtils]: Spent 18.22s on a formula simplification. DAG size of input: 297 DAG size of output: 237 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:22:01,502 INFO L321 Elim1Store]: treesize reduction 150, result has 81.1 percent of original size [2022-11-18 20:22:01,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 18 new quantified variables, introduced 66 case distinctions, treesize of input 114886 treesize of output 78475