./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- [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-dbf71c6-m [2022-10-17 10:27:52,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:27:52,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:27:52,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:27:52,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:27:52,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:27:52,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:27:52,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:27:52,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:27:52,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:27:52,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:27:52,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:27:52,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:27:52,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:27:52,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:27:52,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:27:52,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:27:52,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:27:52,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:27:52,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:27:52,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:27:52,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:27:52,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:27:52,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:27:52,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:27:52,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:27:52,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:27:52,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:27:52,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:27:52,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:27:52,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:27:52,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:27:52,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:27:52,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:27:52,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:27:52,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:27:52,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:27:52,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:27:52,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:27:52,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:27:52,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:27:52,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:27:52,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:27:52,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:27:52,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:27:52,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:27:52,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:27:52,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:27:52,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:27:52,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:27:52,242 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:27:52,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:27:52,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:27:52,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:27:52,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:27:52,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:27:52,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:27:52,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:27:52,245 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:27:52,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:27:52,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:27:52,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:27:52,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:27:52,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:27:52,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:27:52,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:27:52,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:27:52,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:27:52,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:27:52,250 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:27:52,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:27:52,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:27:52,251 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_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2022-10-17 10:27:52,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:27:52,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:27:52,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:27:52,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:27:52,522 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:27:52,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2022-10-17 10:27:52,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/data/320be5518/d2d0eb7fdd42419785d6552218020f88/FLAG704484fdd [2022-10-17 10:27:53,342 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:27:53,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2022-10-17 10:27:53,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/data/320be5518/d2d0eb7fdd42419785d6552218020f88/FLAG704484fdd [2022-10-17 10:27:53,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/data/320be5518/d2d0eb7fdd42419785d6552218020f88 [2022-10-17 10:27:53,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:27:53,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:27:53,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:27:53,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:27:53,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:27:53,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:27:53" (1/1) ... [2022-10-17 10:27:53,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7a8106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:53, skipping insertion in model container [2022-10-17 10:27:53,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:27:53" (1/1) ... [2022-10-17 10:27:53,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:27:53,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:27:53,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2022-10-17 10:27:53,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2022-10-17 10:27:54,671 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,672 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,672 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,674 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,675 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,697 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,701 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,703 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,704 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,705 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:54,706 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,112 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:27:55,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:27:55,115 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:27:55,116 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:27:55,118 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:27:55,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:27:55,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:27:55,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:27:55,121 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:27:55,122 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:27:55,303 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:27:55,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,354 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,359 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,372 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,463 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,464 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,466 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,466 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,468 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,468 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,469 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,469 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,469 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,469 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,475 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,476 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,476 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,476 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,485 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,486 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,496 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,496 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:27:55,548 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:27:55,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2022-10-17 10:27:55,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2022-10-17 10:27:55,645 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,645 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,646 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,647 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,648 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,657 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,657 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,658 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,658 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,660 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,660 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,661 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,661 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,718 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:27:55,719 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:27:55,720 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:27:55,720 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:27:55,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:27:55,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:27:55,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:27:55,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:27:55,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:27:55,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:27:55,765 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:27:55,786 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,787 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,787 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,792 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,828 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,829 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,829 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,831 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,831 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,832 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,832 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,834 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,836 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,836 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,847 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,847 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,848 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:27:55,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:27:56,172 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:27:56,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56 WrapperNode [2022-10-17 10:27:56,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:27:56,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:27:56,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:27:56,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:27:56,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,437 INFO L138 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 919 [2022-10-17 10:27:56,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:27:56,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:27:56,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:27:56,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:27:56,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:27:56,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:27:56,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:27:56,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:27:56,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (1/1) ... [2022-10-17 10:27:56,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:27:56,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:27:56,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:27:56,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:27:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2022-10-17 10:27:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2022-10-17 10:27:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-10-17 10:27:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-10-17 10:27:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-10-17 10:27:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-10-17 10:27:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:27:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-10-17 10:27:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-10-17 10:27:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-10-17 10:27:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-10-17 10:27:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 10:27:56,676 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 10:27:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-10-17 10:27:56,676 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-10-17 10:27:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:27:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 10:27:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 10:27:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:27:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:27:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:27:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:27:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:27:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-10-17 10:27:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-10-17 10:27:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-10-17 10:27:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-10-17 10:27:56,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:27:56,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:27:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 10:27:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 10:27:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 10:27:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 10:27:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-10-17 10:27:56,679 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-10-17 10:27:56,679 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-10-17 10:27:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-10-17 10:27:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-10-17 10:27:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-10-17 10:27:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:27:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:27:56,680 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-10-17 10:27:56,680 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-10-17 10:27:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:27:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:27:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:27:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-10-17 10:27:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-10-17 10:27:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-10-17 10:27:56,681 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-10-17 10:27:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 10:27:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 10:27:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:27:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-10-17 10:27:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-10-17 10:27:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-10-17 10:27:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-10-17 10:27:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:27:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:27:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:27:57,090 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:27:57,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:27:58,552 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:27:58,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:27:58,563 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 10:27:58,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:27:58 BoogieIcfgContainer [2022-10-17 10:27:58,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:27:58,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:27:58,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:27:58,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:27:58,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:27:53" (1/3) ... [2022-10-17 10:27:58,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5026989d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:27:58, skipping insertion in model container [2022-10-17 10:27:58,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:27:56" (2/3) ... [2022-10-17 10:27:58,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5026989d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:27:58, skipping insertion in model container [2022-10-17 10:27:58,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:27:58" (3/3) ... [2022-10-17 10:27:58,575 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2022-10-17 10:27:58,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:27:58,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:27:58,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:27:58,662 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;@5acf40c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:27:58,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:27:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2022-10-17 10:27:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-17 10:27:58,706 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:27:58,707 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:27:58,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:27:58,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:27:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1703596242, now seen corresponding path program 1 times [2022-10-17 10:27:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:27:58,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765772302] [2022-10-17 10:27:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:27:58,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:27:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:27:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:27:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:27:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 10:27:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:27:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:27:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:27:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:27:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:27:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:27:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:27:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:27:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:27:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:27:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:27:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:27:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:27:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-10-17 10:27:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:27:59,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765772302] [2022-10-17 10:27:59,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765772302] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:27:59,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:27:59,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:27:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525424846] [2022-10-17 10:27:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:27:59,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:27:59,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:27:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:27:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:27:59,854 INFO L87 Difference]: Start difference. First operand has 358 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:28:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:01,293 INFO L93 Difference]: Finished difference Result 821 states and 1341 transitions. [2022-10-17 10:28:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:28:01,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2022-10-17 10:28:01,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:01,320 INFO L225 Difference]: With dead ends: 821 [2022-10-17 10:28:01,320 INFO L226 Difference]: Without dead ends: 469 [2022-10-17 10:28:01,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:28:01,336 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 267 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:01,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 623 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 10:28:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-10-17 10:28:01,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 351. [2022-10-17 10:28:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 213 states have (on average 1.2300469483568075) internal successors, (262), 215 states have internal predecessors, (262), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2022-10-17 10:28:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 486 transitions. [2022-10-17 10:28:01,487 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 486 transitions. Word has length 103 [2022-10-17 10:28:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:01,497 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 486 transitions. [2022-10-17 10:28:01,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:28:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 486 transitions. [2022-10-17 10:28:01,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-17 10:28:01,508 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:01,508 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:01,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:28:01,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1175202252, now seen corresponding path program 1 times [2022-10-17 10:28:01,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:01,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338335940] [2022-10-17 10:28:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:01,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:28:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:28:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:28:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 10:28:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:28:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:28:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:28:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:28:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:28:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:28:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:28:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:28:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:28:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:28:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:28:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:28:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-10-17 10:28:02,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:02,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338335940] [2022-10-17 10:28:02,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338335940] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:28:02,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425889209] [2022-10-17 10:28:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:02,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:02,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:02,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:28:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:02,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:28:02,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-10-17 10:28:02,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:02,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425889209] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:02,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:28:02,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-17 10:28:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116134042] [2022-10-17 10:28:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:02,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:02,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:28:02,799 INFO L87 Difference]: Start difference. First operand 351 states and 486 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:28:02,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:02,843 INFO L93 Difference]: Finished difference Result 437 states and 596 transitions. [2022-10-17 10:28:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:02,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2022-10-17 10:28:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:02,851 INFO L225 Difference]: With dead ends: 437 [2022-10-17 10:28:02,852 INFO L226 Difference]: Without dead ends: 352 [2022-10-17 10:28:02,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:28:02,854 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 0 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:02,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 965 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:28:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-10-17 10:28:02,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2022-10-17 10:28:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 214 states have (on average 1.2289719626168225) internal successors, (263), 216 states have internal predecessors, (263), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2022-10-17 10:28:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 487 transitions. [2022-10-17 10:28:02,904 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 487 transitions. Word has length 103 [2022-10-17 10:28:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:02,905 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 487 transitions. [2022-10-17 10:28:02,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:28:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 487 transitions. [2022-10-17 10:28:02,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:28:02,909 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:02,909 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:02,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:03,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:03,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash -99696786, now seen corresponding path program 1 times [2022-10-17 10:28:03,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:03,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586364109] [2022-10-17 10:28:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:03,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:28:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:28:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:28:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 10:28:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:28:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:28:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:28:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:28:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:28:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:28:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:28:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:28:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-17 10:28:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:28:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-17 10:28:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:28:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-17 10:28:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:28:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-17 10:28:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-10-17 10:28:03,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586364109] [2022-10-17 10:28:03,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586364109] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:28:03,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472587013] [2022-10-17 10:28:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:03,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:03,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:03,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:03,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:28:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:04,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:28:04,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-17 10:28:04,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:04,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472587013] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:04,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:28:04,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-10-17 10:28:04,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086765429] [2022-10-17 10:28:04,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:04,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:28:04,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:28:04,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:28:04,593 INFO L87 Difference]: Start difference. First operand 352 states and 487 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-10-17 10:28:04,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:04,870 INFO L93 Difference]: Finished difference Result 670 states and 938 transitions. [2022-10-17 10:28:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:28:04,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2022-10-17 10:28:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:04,874 INFO L225 Difference]: With dead ends: 670 [2022-10-17 10:28:04,874 INFO L226 Difference]: Without dead ends: 354 [2022-10-17 10:28:04,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:28:04,878 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 504 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:04,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1709 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:28:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-10-17 10:28:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-10-17 10:28:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 215 states have (on average 1.2279069767441861) internal successors, (264), 218 states have internal predecessors, (264), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2022-10-17 10:28:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 496 transitions. [2022-10-17 10:28:04,911 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 496 transitions. Word has length 124 [2022-10-17 10:28:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:04,912 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 496 transitions. [2022-10-17 10:28:04,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-10-17 10:28:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 496 transitions. [2022-10-17 10:28:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-17 10:28:04,915 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:04,915 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:04,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:05,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2138740587, now seen corresponding path program 1 times [2022-10-17 10:28:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:05,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855075433] [2022-10-17 10:28:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:28:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:28:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:28:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 10:28:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:28:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:28:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:28:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:28:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:28:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:28:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:28:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:28:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-17 10:28:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-17 10:28:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-17 10:28:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-17 10:28:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-17 10:28:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-10-17 10:28:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:28:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-10-17 10:28:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-10-17 10:28:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:05,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855075433] [2022-10-17 10:28:05,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855075433] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:28:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286895546] [2022-10-17 10:28:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:05,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:05,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:05,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:05,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:28:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:06,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2321 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:28:06,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-17 10:28:06,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:06,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286895546] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:06,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:28:06,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-10-17 10:28:06,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906155596] [2022-10-17 10:28:06,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:06,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:28:06,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:28:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:28:06,581 INFO L87 Difference]: Start difference. First operand 354 states and 496 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-10-17 10:28:06,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:06,909 INFO L93 Difference]: Finished difference Result 693 states and 993 transitions. [2022-10-17 10:28:06,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:28:06,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 132 [2022-10-17 10:28:06,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:06,914 INFO L225 Difference]: With dead ends: 693 [2022-10-17 10:28:06,914 INFO L226 Difference]: Without dead ends: 375 [2022-10-17 10:28:06,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:28:06,918 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 96 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:06,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2587 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:28:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-10-17 10:28:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2022-10-17 10:28:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2022-10-17 10:28:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2022-10-17 10:28:06,955 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 132 [2022-10-17 10:28:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:06,956 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2022-10-17 10:28:06,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-10-17 10:28:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2022-10-17 10:28:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-10-17 10:28:06,965 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:06,965 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:07,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:07,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:07,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1048395964, now seen corresponding path program 1 times [2022-10-17 10:28:07,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:07,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573405521] [2022-10-17 10:28:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:07,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:07,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:07,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328739233] [2022-10-17 10:28:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:07,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:07,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:07,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:07,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:28:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:07,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:28:07,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-17 10:28:07,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573405521] [2022-10-17 10:28:07,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:07,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328739233] [2022-10-17 10:28:07,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328739233] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:07,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:07,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:28:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401248877] [2022-10-17 10:28:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:28:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:28:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:28:07,946 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-10-17 10:28:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:08,311 INFO L93 Difference]: Finished difference Result 718 states and 1050 transitions. [2022-10-17 10:28:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:28:08,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 147 [2022-10-17 10:28:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:08,316 INFO L225 Difference]: With dead ends: 718 [2022-10-17 10:28:08,316 INFO L226 Difference]: Without dead ends: 381 [2022-10-17 10:28:08,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:28:08,320 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 528 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:08,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 2094 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:28:08,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-10-17 10:28:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2022-10-17 10:28:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2022-10-17 10:28:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2022-10-17 10:28:08,354 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 147 [2022-10-17 10:28:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:08,355 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2022-10-17 10:28:08,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-10-17 10:28:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2022-10-17 10:28:08,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-10-17 10:28:08,358 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:08,359 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:08,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:08,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:08,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:08,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1514523470, now seen corresponding path program 1 times [2022-10-17 10:28:08,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:08,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657855019] [2022-10-17 10:28:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:08,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:08,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:08,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004281765] [2022-10-17 10:28:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:08,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:08,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:08,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:08,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:28:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:09,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:28:09,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-10-17 10:28:09,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:09,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657855019] [2022-10-17 10:28:09,358 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:09,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004281765] [2022-10-17 10:28:09,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004281765] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:09,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:09,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:28:09,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337563017] [2022-10-17 10:28:09,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:09,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:28:09,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:09,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:28:09,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:28:09,361 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-10-17 10:28:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:09,845 INFO L93 Difference]: Finished difference Result 744 states and 1088 transitions. [2022-10-17 10:28:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:28:09,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 163 [2022-10-17 10:28:09,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:09,850 INFO L225 Difference]: With dead ends: 744 [2022-10-17 10:28:09,850 INFO L226 Difference]: Without dead ends: 407 [2022-10-17 10:28:09,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:28:09,855 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 117 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:09,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2967 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:28:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-10-17 10:28:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 373. [2022-10-17 10:28:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2022-10-17 10:28:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2022-10-17 10:28:09,893 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 163 [2022-10-17 10:28:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:09,894 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2022-10-17 10:28:09,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-10-17 10:28:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2022-10-17 10:28:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-10-17 10:28:09,898 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:09,899 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:09,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:10,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:28:10,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:10,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1136730081, now seen corresponding path program 1 times [2022-10-17 10:28:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:10,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702881288] [2022-10-17 10:28:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:10,207 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:10,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934266011] [2022-10-17 10:28:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:10,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:10,209 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:10,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:28:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:10,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:28:10,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-10-17 10:28:10,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:10,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702881288] [2022-10-17 10:28:10,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:10,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934266011] [2022-10-17 10:28:10,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934266011] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:10,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:10,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:28:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186842463] [2022-10-17 10:28:10,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:10,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:28:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:10,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:28:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:28:10,893 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-10-17 10:28:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:11,359 INFO L93 Difference]: Finished difference Result 683 states and 991 transitions. [2022-10-17 10:28:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:28:11,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 178 [2022-10-17 10:28:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:11,363 INFO L225 Difference]: With dead ends: 683 [2022-10-17 10:28:11,364 INFO L226 Difference]: Without dead ends: 375 [2022-10-17 10:28:11,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:28:11,367 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 545 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:11,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2422 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:28:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-10-17 10:28:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2022-10-17 10:28:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 236 states have internal predecessors, (287), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2022-10-17 10:28:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 540 transitions. [2022-10-17 10:28:11,398 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 540 transitions. Word has length 178 [2022-10-17 10:28:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:11,399 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 540 transitions. [2022-10-17 10:28:11,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-10-17 10:28:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 540 transitions. [2022-10-17 10:28:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-10-17 10:28:11,403 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:11,403 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:11,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:11,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:11,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1083469799, now seen corresponding path program 1 times [2022-10-17 10:28:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:11,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723566593] [2022-10-17 10:28:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:11,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:11,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:11,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186896767] [2022-10-17 10:28:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:11,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:11,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:11,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:11,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:28:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:12,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:28:12,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-10-17 10:28:12,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:12,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:12,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723566593] [2022-10-17 10:28:12,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:12,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186896767] [2022-10-17 10:28:12,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186896767] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:12,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:12,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:28:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355197588] [2022-10-17 10:28:12,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:12,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:28:12,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:28:12,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:28:12,489 INFO L87 Difference]: Start difference. First operand 375 states and 540 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-10-17 10:28:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:13,035 INFO L93 Difference]: Finished difference Result 688 states and 1006 transitions. [2022-10-17 10:28:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:28:13,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 201 [2022-10-17 10:28:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:13,042 INFO L225 Difference]: With dead ends: 688 [2022-10-17 10:28:13,042 INFO L226 Difference]: Without dead ends: 378 [2022-10-17 10:28:13,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:28:13,046 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 569 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:13,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 2773 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:28:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-10-17 10:28:13,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-10-17 10:28:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 237 states have internal predecessors, (288), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2022-10-17 10:28:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 541 transitions. [2022-10-17 10:28:13,078 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 541 transitions. Word has length 201 [2022-10-17 10:28:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:13,078 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 541 transitions. [2022-10-17 10:28:13,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-10-17 10:28:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 541 transitions. [2022-10-17 10:28:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-10-17 10:28:13,082 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:13,083 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:13,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:13,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:13,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2112387732, now seen corresponding path program 2 times [2022-10-17 10:28:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:13,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630200997] [2022-10-17 10:28:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:13,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:13,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:13,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722545568] [2022-10-17 10:28:13,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:28:13,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:13,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:13,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:13,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:28:13,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:28:13,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:28:13,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:28:13,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-10-17 10:28:13,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:13,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:13,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630200997] [2022-10-17 10:28:13,953 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:13,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722545568] [2022-10-17 10:28:13,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722545568] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:13,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:13,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:13,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691003061] [2022-10-17 10:28:13,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:13,956 INFO L87 Difference]: Start difference. First operand 376 states and 541 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 10:28:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:14,015 INFO L93 Difference]: Finished difference Result 660 states and 957 transitions. [2022-10-17 10:28:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 232 [2022-10-17 10:28:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:14,020 INFO L225 Difference]: With dead ends: 660 [2022-10-17 10:28:14,020 INFO L226 Difference]: Without dead ends: 386 [2022-10-17 10:28:14,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:14,023 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 16 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:14,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 952 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:28:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-10-17 10:28:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 381. [2022-10-17 10:28:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 238 states have (on average 1.23109243697479) internal successors, (293), 242 states have internal predecessors, (293), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2022-10-17 10:28:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 546 transitions. [2022-10-17 10:28:14,061 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 546 transitions. Word has length 232 [2022-10-17 10:28:14,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:14,062 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 546 transitions. [2022-10-17 10:28:14,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-10-17 10:28:14,062 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 546 transitions. [2022-10-17 10:28:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-10-17 10:28:14,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:14,066 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:14,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:14,281 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1034024686, now seen corresponding path program 1 times [2022-10-17 10:28:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:14,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613090222] [2022-10-17 10:28:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:14,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:14,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759934494] [2022-10-17 10:28:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:14,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:14,369 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:14,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:28:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:14,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:28:14,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 121 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-10-17 10:28:15,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:28:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-10-17 10:28:15,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:15,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613090222] [2022-10-17 10:28:15,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:15,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759934494] [2022-10-17 10:28:15,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759934494] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:28:15,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:28:15,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-10-17 10:28:15,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610850591] [2022-10-17 10:28:15,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:28:15,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:28:15,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:28:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:28:15,489 INFO L87 Difference]: Start difference. First operand 381 states and 546 transitions. Second operand has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 9 states have call successors, (43), 4 states have call predecessors, (43), 4 states have return successors, (39), 5 states have call predecessors, (39), 9 states have call successors, (39) [2022-10-17 10:28:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:16,020 INFO L93 Difference]: Finished difference Result 716 states and 1045 transitions. [2022-10-17 10:28:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:28:16,021 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 9 states have call successors, (43), 4 states have call predecessors, (43), 4 states have return successors, (39), 5 states have call predecessors, (39), 9 states have call successors, (39) Word has length 204 [2022-10-17 10:28:16,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:16,030 INFO L225 Difference]: With dead ends: 716 [2022-10-17 10:28:16,031 INFO L226 Difference]: Without dead ends: 400 [2022-10-17 10:28:16,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 393 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:28:16,034 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 174 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:16,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 4714 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:28:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-10-17 10:28:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 394. [2022-10-17 10:28:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 250 states have (on average 1.24) internal successors, (310), 253 states have internal predecessors, (310), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (139), 116 states have call predecessors, (139), 114 states have call successors, (139) [2022-10-17 10:28:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 565 transitions. [2022-10-17 10:28:16,068 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 565 transitions. Word has length 204 [2022-10-17 10:28:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:16,068 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 565 transitions. [2022-10-17 10:28:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 9 states have call successors, (43), 4 states have call predecessors, (43), 4 states have return successors, (39), 5 states have call predecessors, (39), 9 states have call successors, (39) [2022-10-17 10:28:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 565 transitions. [2022-10-17 10:28:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-10-17 10:28:16,073 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:16,073 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:16,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:16,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:28:16,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash -247754433, now seen corresponding path program 2 times [2022-10-17 10:28:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822260753] [2022-10-17 10:28:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:16,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:16,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045491485] [2022-10-17 10:28:16,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:28:16,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:16,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:16,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:16,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 10:28:17,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:28:17,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:28:17,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:28:17,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-17 10:28:17,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822260753] [2022-10-17 10:28:17,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045491485] [2022-10-17 10:28:17,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045491485] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:17,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:17,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:28:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613736237] [2022-10-17 10:28:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:28:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:28:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:28:17,559 INFO L87 Difference]: Start difference. First operand 394 states and 565 transitions. Second operand has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2022-10-17 10:28:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:18,129 INFO L93 Difference]: Finished difference Result 741 states and 1080 transitions. [2022-10-17 10:28:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:28:18,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) Word has length 219 [2022-10-17 10:28:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:18,134 INFO L225 Difference]: With dead ends: 741 [2022-10-17 10:28:18,134 INFO L226 Difference]: Without dead ends: 412 [2022-10-17 10:28:18,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:28:18,138 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 177 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:18,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 3710 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:28:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-10-17 10:28:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 378. [2022-10-17 10:28:18,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 236 states have (on average 1.2330508474576272) internal successors, (291), 239 states have internal predecessors, (291), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (130), 114 states have call predecessors, (130), 113 states have call successors, (130) [2022-10-17 10:28:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 536 transitions. [2022-10-17 10:28:18,171 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 536 transitions. Word has length 219 [2022-10-17 10:28:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:18,172 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 536 transitions. [2022-10-17 10:28:18,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2022-10-17 10:28:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 536 transitions. [2022-10-17 10:28:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-10-17 10:28:18,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:18,177 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:18,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:18,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-17 10:28:18,403 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:18,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1511536, now seen corresponding path program 1 times [2022-10-17 10:28:18,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:18,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103636655] [2022-10-17 10:28:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:18,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:18,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:18,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272481432] [2022-10-17 10:28:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:18,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:18,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:18,503 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:18,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 10:28:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:19,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:28:19,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-10-17 10:28:19,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:19,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:19,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103636655] [2022-10-17 10:28:19,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:19,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272481432] [2022-10-17 10:28:19,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272481432] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:19,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:19,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:28:19,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179888885] [2022-10-17 10:28:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:19,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:28:19,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:28:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:28:19,345 INFO L87 Difference]: Start difference. First operand 378 states and 536 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-10-17 10:28:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:19,932 INFO L93 Difference]: Finished difference Result 684 states and 982 transitions. [2022-10-17 10:28:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:28:19,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 234 [2022-10-17 10:28:19,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:19,937 INFO L225 Difference]: With dead ends: 684 [2022-10-17 10:28:19,937 INFO L226 Difference]: Without dead ends: 380 [2022-10-17 10:28:19,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:28:19,940 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 590 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:19,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 3101 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:28:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-10-17 10:28:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2022-10-17 10:28:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 237 states have (on average 1.2320675105485233) internal successors, (292), 241 states have internal predecessors, (292), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (134), 114 states have call predecessors, (134), 113 states have call successors, (134) [2022-10-17 10:28:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 541 transitions. [2022-10-17 10:28:19,979 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 541 transitions. Word has length 234 [2022-10-17 10:28:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:19,980 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 541 transitions. [2022-10-17 10:28:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-10-17 10:28:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 541 transitions. [2022-10-17 10:28:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-10-17 10:28:19,985 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:19,986 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:20,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:20,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:20,211 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1366410168, now seen corresponding path program 1 times [2022-10-17 10:28:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:20,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378941906] [2022-10-17 10:28:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:20,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:28:20,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566731017] [2022-10-17 10:28:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:20,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:20,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:20,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:28:20,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 10:28:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:21,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 3465 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:28:21,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:28:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-10-17 10:28:21,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:28:21,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:21,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378941906] [2022-10-17 10:28:21,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:28:21,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566731017] [2022-10-17 10:28:21,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566731017] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:21,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:21,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:28:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357735978] [2022-10-17 10:28:21,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:21,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:28:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:28:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:28:21,227 INFO L87 Difference]: Start difference. First operand 380 states and 541 transitions. Second operand has 11 states, 10 states have (on average 9.9) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-10-17 10:28:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:21,905 INFO L93 Difference]: Finished difference Result 689 states and 993 transitions. [2022-10-17 10:28:21,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:28:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.9) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 280 [2022-10-17 10:28:21,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:21,913 INFO L225 Difference]: With dead ends: 689 [2022-10-17 10:28:21,913 INFO L226 Difference]: Without dead ends: 383 [2022-10-17 10:28:21,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:28:21,916 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 614 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:21,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 3423 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:28:21,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-10-17 10:28:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 381. [2022-10-17 10:28:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 238 states have (on average 1.23109243697479) internal successors, (293), 242 states have internal predecessors, (293), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (134), 114 states have call predecessors, (134), 113 states have call successors, (134) [2022-10-17 10:28:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 542 transitions. [2022-10-17 10:28:21,947 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 542 transitions. Word has length 280 [2022-10-17 10:28:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:21,948 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 542 transitions. [2022-10-17 10:28:21,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.9) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-10-17 10:28:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 542 transitions. [2022-10-17 10:28:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-10-17 10:28:21,953 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:21,953 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:21,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:28:22,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f85aec-f2cc-4a68-b3e5-35e8b2428f32/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:28:22,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:22,179 INFO L85 PathProgramCache]: Analyzing trace with hash 473503328, now seen corresponding path program 1 times [2022-10-17 10:28:22,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:22,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115455444] [2022-10-17 10:28:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms