./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_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_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/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_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/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_eb933bd9-7235-4b9b-8212-77b1f4b8d822/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 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 --- 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 10:31:44,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:31:44,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:31:44,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:31:44,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:31:44,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:31:44,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:31:44,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:31:44,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:31:44,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:31:44,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:31:44,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:31:44,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:31:44,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:31:44,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:31:44,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:31:44,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:31:44,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:31:44,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:31:44,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:31:44,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:31:44,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:31:44,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:31:44,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:31:44,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:31:44,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:31:44,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:31:44,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:31:44,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:31:44,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:31:44,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:31:44,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:31:44,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:31:44,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:31:44,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:31:44,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:31:44,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:31:44,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:31:44,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:31:44,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:31:44,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:31:44,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:31:44,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:31:44,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:31:44,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:31:44,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:31:44,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:31:44,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:31:44,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:31:44,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:31:44,253 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:31:44,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:31:44,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:31:44,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:31:44,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:31:44,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:31:44,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:31:44,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:31:44,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:31:44,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:31:44,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:31:44,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:31:44,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:31:44,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:44,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:31:44,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:31:44,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:31:44,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:31:44,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:31:44,258 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:31:44,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:31:44,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:31:44,259 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_eb933bd9-7235-4b9b-8212-77b1f4b8d822/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 [2022-10-17 10:31:44,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:31:44,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:31:44,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:31:44,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:31:44,618 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:31:44,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2022-10-17 10:31:44,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/data/38f0f84f3/6ec64573446b4f8393de2297172ee327/FLAG692191ca1 [2022-10-17 10:31:45,513 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:31:45,513 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2022-10-17 10:31:45,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/data/38f0f84f3/6ec64573446b4f8393de2297172ee327/FLAG692191ca1 [2022-10-17 10:31:45,663 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/data/38f0f84f3/6ec64573446b4f8393de2297172ee327 [2022-10-17 10:31:45,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:31:45,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:31:45,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:45,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:31:45,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:31:45,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:45" (1/1) ... [2022-10-17 10:31:45,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42478495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:45, skipping insertion in model container [2022-10-17 10:31:45,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:45" (1/1) ... [2022-10-17 10:31:45,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:31:45,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:31:46,125 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_eb933bd9-7235-4b9b-8212-77b1f4b8d822/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2022-10-17 10:31:46,133 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_eb933bd9-7235-4b9b-8212-77b1f4b8d822/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2022-10-17 10:31:47,319 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,320 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,321 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,322 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,323 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,337 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,338 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,340 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,340 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,343 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,344 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,344 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,345 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:47,788 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:31:47,789 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:31:47,791 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:31:47,792 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:31:47,794 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:31:47,794 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:31:47,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:31:47,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:31:47,797 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:31:47,797 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:31:47,994 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:31:48,484 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,486 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,514 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,524 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,525 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,550 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,551 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,551 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,553 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,553 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,553 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,554 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:48,654 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:31:48,683 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_eb933bd9-7235-4b9b-8212-77b1f4b8d822/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2022-10-17 10:31:48,684 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_eb933bd9-7235-4b9b-8212-77b1f4b8d822/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2022-10-17 10:31:48,732 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,734 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,734 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,735 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,735 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,776 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,776 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,777 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,777 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,778 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,778 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,779 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,779 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,807 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:31:48,808 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:31:48,808 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:31:48,809 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:31:48,810 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:31:48,810 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:31:48,811 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:31:48,811 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:31:48,811 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:31:48,812 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:31:48,829 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:31:48,912 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,913 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,919 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,920 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,931 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,931 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:31:48,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:49,321 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:31:49,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49 WrapperNode [2022-10-17 10:31:49,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:49,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:49,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:31:49,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:31:49,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,573 INFO L138 Inliner]: procedures = 774, calls = 2454, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 642 [2022-10-17 10:31:49,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:49,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:31:49,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:31:49,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:31:49,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,691 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:31:49,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:31:49,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:31:49,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:31:49,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (1/1) ... [2022-10-17 10:31:49,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:49,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:49,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:31:49,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:31:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 10:31:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:31:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_done [2022-10-17 10:31:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_done [2022-10-17 10:31:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 10:31:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 10:31:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:31:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:31:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-10-17 10:31:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-10-17 10:31:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:31:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:31:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:31:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:31:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:31:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 10:31:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 10:31:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 10:31:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 10:31:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:31:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-10-17 10:31:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-10-17 10:31:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:31:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-10-17 10:31:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-10-17 10:31:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:31:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-10-17 10:31:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-10-17 10:31:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:31:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-10-17 10:31:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-10-17 10:31:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:31:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:31:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-10-17 10:31:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-10-17 10:31:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-10-17 10:31:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-10-17 10:31:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:31:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 10:31:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 10:31:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-10-17 10:31:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-10-17 10:31:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:31:50,195 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:31:50,197 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:31:51,336 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:31:51,344 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:31:51,344 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:31:51,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:51 BoogieIcfgContainer [2022-10-17 10:31:51,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:31:51,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:31:51,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:31:51,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:31:51,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:31:45" (1/3) ... [2022-10-17 10:31:51,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dff1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:51, skipping insertion in model container [2022-10-17 10:31:51,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:49" (2/3) ... [2022-10-17 10:31:51,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dff1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:51, skipping insertion in model container [2022-10-17 10:31:51,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:51" (3/3) ... [2022-10-17 10:31:51,355 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_done_harness.i [2022-10-17 10:31:51,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:31:51,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:31:51,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:31:51,433 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;@468cba27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:31:51,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:31:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 100 states have (on average 1.23) internal successors, (123), 101 states have internal predecessors, (123), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-10-17 10:31:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-10-17 10:31:51,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:51,455 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 10:31:51,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1143533925, now seen corresponding path program 1 times [2022-10-17 10:31:51,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:51,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664656281] [2022-10-17 10:31:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:51,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:52,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664656281] [2022-10-17 10:31:52,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:31:52,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258055195] [2022-10-17 10:31:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:52,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:31:52,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:52,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:31:52,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:31:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:52,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:31:52,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-10-17 10:31:52,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:52,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258055195] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:52,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:52,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:31:52,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637091449] [2022-10-17 10:31:52,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:52,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:31:52,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:52,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:31:52,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:31:52,823 INFO L87 Difference]: Start difference. First operand has 157 states, 100 states have (on average 1.23) internal successors, (123), 101 states have internal predecessors, (123), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-10-17 10:31:52,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:52,902 INFO L93 Difference]: Finished difference Result 306 states and 418 transitions. [2022-10-17 10:31:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:31:52,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 140 [2022-10-17 10:31:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:52,918 INFO L225 Difference]: With dead ends: 306 [2022-10-17 10:31:52,918 INFO L226 Difference]: Without dead ends: 151 [2022-10-17 10:31:52,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:31:52,927 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:52,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:31:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-10-17 10:31:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-10-17 10:31:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 95 states have (on average 1.2210526315789474) internal successors, (116), 96 states have internal predecessors, (116), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-10-17 10:31:53,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2022-10-17 10:31:53,002 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 140 [2022-10-17 10:31:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:53,002 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2022-10-17 10:31:53,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-10-17 10:31:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2022-10-17 10:31:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-10-17 10:31:53,013 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:53,014 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 10:31:53,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:31:53,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:53,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 611203689, now seen corresponding path program 1 times [2022-10-17 10:31:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:53,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378709415] [2022-10-17 10:31:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:53,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:53,402 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:31:53,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843993444] [2022-10-17 10:31:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:53,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:31:53,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:53,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:31:53,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:31:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:54,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:31:54,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 115 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-10-17 10:31:54,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:31:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-10-17 10:31:54,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:54,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378709415] [2022-10-17 10:31:54,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:31:54,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843993444] [2022-10-17 10:31:54,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843993444] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:31:54,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:31:54,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-10-17 10:31:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428910686] [2022-10-17 10:31:54,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:31:54,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:31:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:31:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:31:54,484 INFO L87 Difference]: Start difference. First operand 151 states and 195 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-10-17 10:31:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:54,826 INFO L93 Difference]: Finished difference Result 274 states and 354 transitions. [2022-10-17 10:31:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:31:54,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) Word has length 140 [2022-10-17 10:31:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:54,835 INFO L225 Difference]: With dead ends: 274 [2022-10-17 10:31:54,835 INFO L226 Difference]: Without dead ends: 153 [2022-10-17 10:31:54,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:31:54,845 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 198 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:54,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 732 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:31:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-10-17 10:31:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-10-17 10:31:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 96 states have (on average 1.21875) internal successors, (117), 98 states have internal predecessors, (117), 40 states have call successors, (40), 15 states have call predecessors, (40), 16 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-10-17 10:31:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2022-10-17 10:31:54,878 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 140 [2022-10-17 10:31:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:54,879 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2022-10-17 10:31:54,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-10-17 10:31:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2022-10-17 10:31:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-10-17 10:31:54,882 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:54,883 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-10-17 10:31:54,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-17 10:31:55,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1045405273, now seen corresponding path program 1 times [2022-10-17 10:31:55,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:55,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518463815] [2022-10-17 10:31:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:55,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:31:55,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351456595] [2022-10-17 10:31:55,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:55,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:31:55,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:55,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:31:55,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:31:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:55,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:31:55,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 67 proven. 75 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-17 10:31:55,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:31:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-10-17 10:31:56,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:56,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518463815] [2022-10-17 10:31:56,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:31:56,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351456595] [2022-10-17 10:31:56,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351456595] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:31:56,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:31:56,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-10-17 10:31:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023809803] [2022-10-17 10:31:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:56,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:31:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:31:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:31:56,128 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2022-10-17 10:31:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:56,463 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2022-10-17 10:31:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:31:56,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 141 [2022-10-17 10:31:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:56,470 INFO L225 Difference]: With dead ends: 226 [2022-10-17 10:31:56,470 INFO L226 Difference]: Without dead ends: 151 [2022-10-17 10:31:56,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:31:56,475 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 205 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:56,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 820 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:31:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-10-17 10:31:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-10-17 10:31:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 96 states have internal predecessors, (115), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-10-17 10:31:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2022-10-17 10:31:56,513 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 141 [2022-10-17 10:31:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:56,515 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2022-10-17 10:31:56,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2022-10-17 10:31:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2022-10-17 10:31:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-10-17 10:31:56,522 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:56,522 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 10:31:56,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:56,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:31:56,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:56,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1499101739, now seen corresponding path program 1 times [2022-10-17 10:31:56,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:56,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171278380] [2022-10-17 10:31:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:56,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:56,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:31:56,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794921829] [2022-10-17 10:31:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:56,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:31:56,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:56,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:31:56,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:31:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:57,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:31:57,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:31:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-10-17 10:31:57,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:31:57,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:57,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171278380] [2022-10-17 10:31:57,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:31:57,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794921829] [2022-10-17 10:31:57,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794921829] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:57,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:57,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:31:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386231777] [2022-10-17 10:31:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:57,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:31:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:57,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:31:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:31:57,443 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-10-17 10:31:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:31:57,495 INFO L93 Difference]: Finished difference Result 295 states and 380 transitions. [2022-10-17 10:31:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:31:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 142 [2022-10-17 10:31:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:31:57,498 INFO L225 Difference]: With dead ends: 295 [2022-10-17 10:31:57,498 INFO L226 Difference]: Without dead ends: 156 [2022-10-17 10:31:57,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:31:57,503 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 2 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:31:57,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 759 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:31:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-10-17 10:31:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-10-17 10:31:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 99 states have (on average 1.202020202020202) internal successors, (119), 100 states have internal predecessors, (119), 40 states have call successors, (40), 15 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2022-10-17 10:31:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2022-10-17 10:31:57,525 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 142 [2022-10-17 10:31:57,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:31:57,526 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2022-10-17 10:31:57,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-10-17 10:31:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2022-10-17 10:31:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-10-17 10:31:57,528 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:31:57,528 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 10:31:57,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:31:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:31:57,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:31:57,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:57,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1151585641, now seen corresponding path program 1 times [2022-10-17 10:31:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:57,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084085388] [2022-10-17 10:31:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:31:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:31:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:31:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:31:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:31:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:31:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:31:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:31:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:31:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:31:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:31:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:31:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:31:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:31:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:31:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:32:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:32:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-17 10:32:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:32:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-10-17 10:32:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-10-17 10:32:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-10-17 10:32:00,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:00,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084085388] [2022-10-17 10:32:00,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084085388] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:00,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:00,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 10:32:00,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974542948] [2022-10-17 10:32:00,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:00,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:32:00,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:32:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:32:00,129 INFO L87 Difference]: Start difference. First operand 156 states and 199 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-10-17 10:32:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:01,358 INFO L93 Difference]: Finished difference Result 304 states and 391 transitions. [2022-10-17 10:32:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:32:01,359 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-10-17 10:32:01,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:01,361 INFO L225 Difference]: With dead ends: 304 [2022-10-17 10:32:01,361 INFO L226 Difference]: Without dead ends: 172 [2022-10-17 10:32:01,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:32:01,363 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 199 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:01,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 740 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:32:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-10-17 10:32:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2022-10-17 10:32:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 103 states have (on average 1.203883495145631) internal successors, (124), 105 states have internal predecessors, (124), 40 states have call successors, (40), 15 states have call predecessors, (40), 17 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2022-10-17 10:32:01,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 206 transitions. [2022-10-17 10:32:01,383 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 206 transitions. Word has length 154 [2022-10-17 10:32:01,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:01,383 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 206 transitions. [2022-10-17 10:32:01,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-10-17 10:32:01,384 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 206 transitions. [2022-10-17 10:32:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-10-17 10:32:01,386 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:01,386 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 10:32:01,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:32:01,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:01,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:01,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1922319207, now seen corresponding path program 1 times [2022-10-17 10:32:01,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:01,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697268583] [2022-10-17 10:32:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:01,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:32:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:32:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:32:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:32:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:32:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:32:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:32:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:32:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:32:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:32:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:32:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:32:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-10-17 10:32:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:32:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-10-17 10:32:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-10-17 10:32:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-10-17 10:32:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:02,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697268583] [2022-10-17 10:32:02,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697268583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:02,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:02,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:32:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526302409] [2022-10-17 10:32:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:02,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:32:02,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:32:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:32:02,373 INFO L87 Difference]: Start difference. First operand 161 states and 206 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-10-17 10:32:02,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:03,000 INFO L93 Difference]: Finished difference Result 311 states and 401 transitions. [2022-10-17 10:32:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:32:03,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 154 [2022-10-17 10:32:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:03,002 INFO L225 Difference]: With dead ends: 311 [2022-10-17 10:32:03,003 INFO L226 Difference]: Without dead ends: 174 [2022-10-17 10:32:03,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:32:03,004 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 233 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:03,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 366 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:32:03,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-10-17 10:32:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2022-10-17 10:32:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 109 states have internal predecessors, (127), 41 states have call successors, (41), 15 states have call predecessors, (41), 18 states have return successors, (44), 41 states have call predecessors, (44), 40 states have call successors, (44) [2022-10-17 10:32:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 212 transitions. [2022-10-17 10:32:03,025 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 212 transitions. Word has length 154 [2022-10-17 10:32:03,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:03,026 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 212 transitions. [2022-10-17 10:32:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-10-17 10:32:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 212 transitions. [2022-10-17 10:32:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-10-17 10:32:03,029 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:03,029 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:03,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:32:03,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash 519277663, now seen corresponding path program 1 times [2022-10-17 10:32:03,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:03,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99860663] [2022-10-17 10:32:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:03,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:32:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:32:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:32:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:32:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:32:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:32:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:03,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:32:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:32:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:32:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-17 10:32:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-17 10:32:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:32:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:32:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-10-17 10:32:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-10-17 10:32:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-10-17 10:32:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-10-17 10:32:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-10-17 10:32:04,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:04,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99860663] [2022-10-17 10:32:04,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99860663] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:04,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:04,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:32:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229362816] [2022-10-17 10:32:04,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:04,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:32:04,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:32:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:32:04,291 INFO L87 Difference]: Start difference. First operand 166 states and 212 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2022-10-17 10:32:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:05,311 INFO L93 Difference]: Finished difference Result 319 states and 418 transitions. [2022-10-17 10:32:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:32:05,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 160 [2022-10-17 10:32:05,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:05,313 INFO L225 Difference]: With dead ends: 319 [2022-10-17 10:32:05,313 INFO L226 Difference]: Without dead ends: 175 [2022-10-17 10:32:05,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:32:05,315 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 95 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:05,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 649 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:32:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-10-17 10:32:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2022-10-17 10:32:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 109 states have internal predecessors, (126), 41 states have call successors, (41), 15 states have call predecessors, (41), 18 states have return successors, (44), 41 states have call predecessors, (44), 40 states have call successors, (44) [2022-10-17 10:32:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2022-10-17 10:32:05,344 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 160 [2022-10-17 10:32:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:05,344 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2022-10-17 10:32:05,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2022-10-17 10:32:05,345 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2022-10-17 10:32:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-10-17 10:32:05,347 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:05,347 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:05,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:32:05,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1794962801, now seen corresponding path program 1 times [2022-10-17 10:32:05,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:05,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000650213] [2022-10-17 10:32:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:32:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:32:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:32:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:32:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:32:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:32:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:32:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:32:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:32:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:32:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:32:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:32:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:32:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:32:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-17 10:32:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-10-17 10:32:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-10-17 10:32:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-10-17 10:32:07,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000650213] [2022-10-17 10:32:07,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000650213] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:32:07,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002921474] [2022-10-17 10:32:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:07,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:07,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:07,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:32:07,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:32:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:08,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:32:08,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:32:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-10-17 10:32:08,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:32:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-10-17 10:32:08,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002921474] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:32:08,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:32:08,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 8] total 22 [2022-10-17 10:32:08,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737107691] [2022-10-17 10:32:08,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:08,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:32:08,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:32:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-10-17 10:32:08,788 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-10-17 10:32:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:08,856 INFO L93 Difference]: Finished difference Result 174 states and 219 transitions. [2022-10-17 10:32:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:32:08,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 165 [2022-10-17 10:32:08,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:08,858 INFO L225 Difference]: With dead ends: 174 [2022-10-17 10:32:08,859 INFO L226 Difference]: Without dead ends: 172 [2022-10-17 10:32:08,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:32:08,860 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 6 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:08,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 749 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:32:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-10-17 10:32:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2022-10-17 10:32:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 109 states have (on average 1.18348623853211) internal successors, (129), 113 states have internal predecessors, (129), 42 states have call successors, (42), 16 states have call predecessors, (42), 19 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2022-10-17 10:32:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2022-10-17 10:32:08,885 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 165 [2022-10-17 10:32:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:08,886 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2022-10-17 10:32:08,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-10-17 10:32:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2022-10-17 10:32:08,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-10-17 10:32:08,889 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:08,889 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:08,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:32:09,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-17 10:32:09,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:09,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1793115759, now seen corresponding path program 1 times [2022-10-17 10:32:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:09,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817944717] [2022-10-17 10:32:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:09,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:32:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:32:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:32:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:32:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:32:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:32:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:32:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:32:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:32:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:32:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:32:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:32:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:32:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:32:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-17 10:32:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-10-17 10:32:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-10-17 10:32:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-10-17 10:32:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:10,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817944717] [2022-10-17 10:32:10,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817944717] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:10,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:10,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:32:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992302355] [2022-10-17 10:32:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:10,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:32:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:32:10,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:32:10,144 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 10:32:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:10,867 INFO L93 Difference]: Finished difference Result 263 states and 339 transitions. [2022-10-17 10:32:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:32:10,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 165 [2022-10-17 10:32:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:10,870 INFO L225 Difference]: With dead ends: 263 [2022-10-17 10:32:10,870 INFO L226 Difference]: Without dead ends: 192 [2022-10-17 10:32:10,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:32:10,871 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 219 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:10,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 453 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 10:32:10,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-10-17 10:32:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2022-10-17 10:32:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 115 states have internal predecessors, (131), 43 states have call successors, (43), 16 states have call predecessors, (43), 19 states have return successors, (46), 42 states have call predecessors, (46), 42 states have call successors, (46) [2022-10-17 10:32:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 220 transitions. [2022-10-17 10:32:10,898 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 220 transitions. Word has length 165 [2022-10-17 10:32:10,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:10,898 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 220 transitions. [2022-10-17 10:32:10,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 10:32:10,899 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 220 transitions. [2022-10-17 10:32:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-10-17 10:32:10,901 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:10,901 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:10,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:32:10,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1534950321, now seen corresponding path program 1 times [2022-10-17 10:32:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:10,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741688510] [2022-10-17 10:32:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:10,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:32:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:32:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:32:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:32:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:32:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:32:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:32:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:32:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:32:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:32:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:32:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-17 10:32:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-17 10:32:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-17 10:32:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:32:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:32:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:32:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-17 10:32:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-10-17 10:32:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-10-17 10:32:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-10-17 10:32:13,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:13,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741688510] [2022-10-17 10:32:13,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741688510] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:32:13,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118122068] [2022-10-17 10:32:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:13,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:32:13,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:13,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:32:13,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb933bd9-7235-4b9b-8212-77b1f4b8d822/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process