./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8 --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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- 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-e04fb08 [2022-11-16 11:21:45,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:21:45,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:21:45,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:21:45,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:21:45,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:21:45,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:21:45,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:21:45,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:21:45,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:21:45,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:21:45,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:21:45,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:21:45,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:21:45,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:21:45,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:21:45,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:21:45,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:21:45,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:21:45,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:21:45,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:21:45,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:21:45,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:21:45,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:21:45,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:21:45,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:21:45,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:21:45,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:21:45,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:21:45,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:21:45,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:21:45,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:21:45,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:21:45,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:21:45,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:21:45,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:21:45,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:21:45,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:21:45,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:21:45,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:21:45,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:21:45,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:21:45,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:21:45,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:21:45,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:21:45,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:21:45,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:21:45,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:21:45,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:21:45,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:21:45,586 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:21:45,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:21:45,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:21:45,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:21:45,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:21:45,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:21:45,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:21:45,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:21:45,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:21:45,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:21:45,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:21:45,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:21:45,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:21:45,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:21:45,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:21:45,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:21:45,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:21:45,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:21:45,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:21:45,591 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:21:45,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:21:45,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:21:45,591 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_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2022-11-16 11:21:45,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:21:45,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:21:45,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:21:45,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:21:45,917 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:21:45,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-16 11:21:45,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data/f47543550/4aa50bccd13a4c08bd57e114a948c6e6/FLAG98cdd4181 [2022-11-16 11:21:46,696 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:21:46,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-16 11:21:46,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data/f47543550/4aa50bccd13a4c08bd57e114a948c6e6/FLAG98cdd4181 [2022-11-16 11:21:46,819 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data/f47543550/4aa50bccd13a4c08bd57e114a948c6e6 [2022-11-16 11:21:46,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:21:46,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:21:46,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:46,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:21:46,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:21:46,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:46" (1/1) ... [2022-11-16 11:21:46,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b20dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:46, skipping insertion in model container [2022-11-16 11:21:46,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:46" (1/1) ... [2022-11-16 11:21:46,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:21:46,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:21:47,211 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-16 11:21:47,216 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-16 11:21:47,854 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,855 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,856 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,856 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,858 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,870 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,871 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,873 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,873 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,875 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,876 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,877 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:47,878 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:21:48,040 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:21:48,041 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:21:48,042 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:21:48,044 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:21:48,045 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:21:48,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:21:48,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:21:48,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:21:48,048 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:21:48,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:48,124 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:21:48,137 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-16 11:21:48,138 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-16 11:21:48,187 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,187 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,188 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,188 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,189 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,199 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,200 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,201 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,202 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,203 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,204 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,205 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,205 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:48,225 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:21:48,231 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:21:48,232 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:21:48,233 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:21:48,234 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:21:48,235 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:21:48,240 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:21:48,241 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:21:48,241 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:21:48,242 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:21:48,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:48,490 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:21:48,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48 WrapperNode [2022-11-16 11:21:48,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:48,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:21:48,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:21:48,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:21:48,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,608 INFO L138 Inliner]: procedures = 592, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2022-11-16 11:21:48,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:21:48,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:21:48,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:21:48,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:21:48,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,643 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:21:48,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:21:48,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:21:48,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:21:48,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (1/1) ... [2022-11-16 11:21:48,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:21:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:21:48,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:21:48,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:21:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:21:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:21:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:21:48,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:21:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:21:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:21:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:21:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:21:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:21:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:21:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-16 11:21:48,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-16 11:21:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-16 11:21:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-16 11:21:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:21:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:21:49,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:21:49,021 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:21:49,347 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:21:49,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:21:49,361 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:21:49,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:21:49 BoogieIcfgContainer [2022-11-16 11:21:49,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:21:49,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:21:49,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:21:49,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:21:49,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:21:46" (1/3) ... [2022-11-16 11:21:49,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e8ea02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:21:49, skipping insertion in model container [2022-11-16 11:21:49,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:48" (2/3) ... [2022-11-16 11:21:49,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e8ea02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:21:49, skipping insertion in model container [2022-11-16 11:21:49,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:21:49" (3/3) ... [2022-11-16 11:21:49,376 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2022-11-16 11:21:49,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:21:49,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:21:49,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:21:49,470 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;@12618b6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:21:49,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:21:49,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 11:21:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:21:49,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:49,485 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:49,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:21:49,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2022-11-16 11:21:49,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:21:49,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784581759] [2022-11-16 11:21:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:49,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:21:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:21:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:21:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:49,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:21:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:21:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:21:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:21:49,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:21:49,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784581759] [2022-11-16 11:21:49,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784581759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:49,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:49,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:21:49,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832586631] [2022-11-16 11:21:49,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:49,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:21:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:21:49,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:21:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:21:49,976 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:21:50,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:50,004 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2022-11-16 11:21:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:21:50,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-11-16 11:21:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:50,018 INFO L225 Difference]: With dead ends: 117 [2022-11-16 11:21:50,019 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 11:21:50,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:21:50,026 INFO L413 NwaCegarLoop]: 75 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, 75 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 [2022-11-16 11:21:50,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:21:50,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 11:21:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-16 11:21:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:21:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-16 11:21:50,070 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2022-11-16 11:21:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:50,070 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-16 11:21:50,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:21:50,071 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-16 11:21:50,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:21:50,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:50,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:50,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:21:50,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:21:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2022-11-16 11:21:50,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:21:50,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008869017] [2022-11-16 11:21:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:50,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:21:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:50,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:21:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:21:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:21:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:21:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:21:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:21:51,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:21:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008869017] [2022-11-16 11:21:51,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008869017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:21:51,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842604672] [2022-11-16 11:21:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:51,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:21:51,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:21:51,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:21:51,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:21:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:51,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:21:51,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:21:51,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:21:52,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842604672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:52,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:21:52,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2022-11-16 11:21:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619308533] [2022-11-16 11:21:52,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:52,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:21:52,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:21:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:21:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:21:52,140 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 11:21:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:52,462 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-16 11:21:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:21:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 36 [2022-11-16 11:21:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:52,469 INFO L225 Difference]: With dead ends: 58 [2022-11-16 11:21:52,469 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 11:21:52,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:21:52,472 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:52,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 482 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:21:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 11:21:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-16 11:21:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:21:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-16 11:21:52,490 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2022-11-16 11:21:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:52,491 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-16 11:21:52,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 11:21:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-16 11:21:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 11:21:52,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:52,493 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-16 11:21:52,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:52,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:21:52,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:21:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:52,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2022-11-16 11:21:52,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:21:52,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301860025] [2022-11-16 11:21:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:21:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:21:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:21:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:21:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:21:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:21:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:21:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:21:53,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:21:53,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301860025] [2022-11-16 11:21:53,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301860025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:53,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:53,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:21:53,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243248431] [2022-11-16 11:21:53,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:53,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:21:53,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:21:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:21:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:21:53,396 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 11:21:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:53,622 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2022-11-16 11:21:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:21:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-11-16 11:21:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:53,624 INFO L225 Difference]: With dead ends: 83 [2022-11-16 11:21:53,625 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 11:21:53,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:21:53,626 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 78 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:53,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 377 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:21:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 11:21:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2022-11-16 11:21:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 11:21:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2022-11-16 11:21:53,643 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 42 [2022-11-16 11:21:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:53,644 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-11-16 11:21:53,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 11:21:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2022-11-16 11:21:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 11:21:53,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:53,645 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-16 11:21:53,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:21:53,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:21:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1722148702, now seen corresponding path program 1 times [2022-11-16 11:21:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:21:53,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161617561] [2022-11-16 11:21:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:21:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:21:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:21:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:21:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:21:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 11:21:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:21:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:21:53,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:21:53,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161617561] [2022-11-16 11:21:53,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161617561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:53,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:53,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:21:53,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275887836] [2022-11-16 11:21:53,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:53,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:21:53,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:21:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:21:53,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:21:53,872 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:21:53,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:53,920 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2022-11-16 11:21:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:21:53,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2022-11-16 11:21:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:53,926 INFO L225 Difference]: With dead ends: 113 [2022-11-16 11:21:53,927 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 11:21:53,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:21:53,935 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:53,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 123 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:21:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 11:21:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2022-11-16 11:21:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 states have internal predecessors, (48), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 11:21:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2022-11-16 11:21:53,961 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 43 [2022-11-16 11:21:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:53,963 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2022-11-16 11:21:53,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:21:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2022-11-16 11:21:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:21:53,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:53,969 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-16 11:21:53,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:21:53,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:21:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:53,970 INFO L85 PathProgramCache]: Analyzing trace with hash 982661572, now seen corresponding path program 1 times [2022-11-16 11:21:53,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:21:53,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556301611] [2022-11-16 11:21:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:53,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:21:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:21:54,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:21:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:21:54,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:21:54,217 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:21:54,218 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:21:54,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:21:54,223 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:21:54,226 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:21:54,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:21:54 BoogieIcfgContainer [2022-11-16 11:21:54,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:21:54,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:21:54,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:21:54,291 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:21:54,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:21:49" (3/4) ... [2022-11-16 11:21:54,294 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:21:54,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:21:54,296 INFO L158 Benchmark]: Toolchain (without parser) took 7472.12ms. Allocated memory was 121.6MB in the beginning and 197.1MB in the end (delta: 75.5MB). Free memory was 80.8MB in the beginning and 85.8MB in the end (delta: -5.0MB). Peak memory consumption was 72.5MB. Max. memory is 16.1GB. [2022-11-16 11:21:54,296 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:21:54,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1665.44ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 80.7MB in the beginning and 110.6MB in the end (delta: -29.9MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2022-11-16 11:21:54,297 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.23ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 106.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:21:54,297 INFO L158 Benchmark]: Boogie Preprocessor took 39.61ms. Allocated memory is still 153.1MB. Free memory was 106.4MB in the beginning and 103.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:21:54,297 INFO L158 Benchmark]: RCFGBuilder took 714.04ms. Allocated memory is still 153.1MB. Free memory was 103.6MB in the beginning and 84.0MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 11:21:54,298 INFO L158 Benchmark]: TraceAbstraction took 4924.30ms. Allocated memory was 153.1MB in the beginning and 197.1MB in the end (delta: 44.0MB). Free memory was 83.3MB in the beginning and 85.8MB in the end (delta: -2.5MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2022-11-16 11:21:54,298 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 197.1MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:21:54,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1665.44ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 80.7MB in the beginning and 110.6MB in the end (delta: -29.9MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.23ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 106.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.61ms. Allocated memory is still 153.1MB. Free memory was 106.4MB in the beginning and 103.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 714.04ms. Allocated memory is still 153.1MB. Free memory was 103.6MB in the beginning and 84.0MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4924.30ms. Allocated memory was 153.1MB in the beginning and 197.1MB in the end (delta: 44.0MB). Free memory was 83.3MB in the beginning and 85.8MB in the end (delta: -2.5MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 197.1MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5885. Possible FailurePath: [L5919] CALL memset_override_0_harness() [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L5909] CALL assume_abort_if_not(c == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5909] RET assume_abort_if_not(c == 0) VAL [c=0, d1={6:0}, d2={5:0}] [L5911] unsigned size = __VERIFIER_nondet_uint(); [L5912] CALL assume_abort_if_not((size & 0x7) == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5912] RET assume_abort_if_not((size & 0x7) == 0) VAL [c=0, d1={6:0}, d2={5:0}, size=1] [L5913] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5913] RET assume_abort_if_not(size < 160) VAL [c=0, d1={6:0}, d2={5:0}, size=1] [L5914] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=0, n=1, s={6:0}] [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; VAL [c=0, i=0, n=1, s={6:0}, sp={6:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=0, n=1, s={6:0}, sp={6:0}] [L5873] i++ VAL [c=0, i=1, n=1, s={6:0}, sp={6:0}] [L5873] COND FALSE !(i < n) VAL [c=0, i=1, n=1, s={6:0}, sp={6:0}] [L5876] return s; VAL [c=0, i=1, n=1, s={6:0}, sp={6:0}] [L5914] RET memset_impl(d1, c, size) [L5915] CALL memset_override_0_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=0, dst={5:0}, n=1] [L5883] CALL __VERIFIER_assert(c == 0) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5883] RET __VERIFIER_assert(c == 0) VAL [c=0, dst={5:0}, n=1] [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; VAL [c=0, dst={5:0}, n=1, num_uint64s=0, rem=1] [L5886] CALL __VERIFIER_assert(rem == 0) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 1057 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 797 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 289 IncrementalHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 260 mSDtfsCounter, 289 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 572 SizeOfPredicates, 14 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 208/244 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 11:21:54,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8 --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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- 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-e04fb08 [2022-11-16 11:21:56,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:21:56,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:21:56,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:21:56,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:21:56,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:21:56,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:21:56,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:21:56,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:21:56,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:21:56,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:21:56,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:21:56,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:21:56,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:21:56,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:21:56,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:21:56,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:21:56,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:21:56,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:21:56,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:21:56,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:21:56,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:21:56,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:21:56,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:21:56,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:21:56,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:21:56,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:21:56,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:21:56,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:21:56,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:21:56,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:21:56,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:21:56,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:21:56,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:21:56,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:21:56,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:21:56,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:21:56,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:21:56,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:21:56,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:21:56,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:21:56,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-16 11:21:56,644 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:21:56,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:21:56,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:21:56,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:21:56,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:21:56,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:21:56,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:21:56,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:21:56,650 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:21:56,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:21:56,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:21:56,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:21:56,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:21:56,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:21:56,652 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:21:56,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:21:56,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:21:56,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:21:56,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:21:56,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:21:56,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:21:56,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:21:56,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:21:56,654 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:21:56,655 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:21:56,655 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:21:56,655 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:21:56,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:21:56,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:21:56,656 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2022-11-16 11:21:57,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:21:57,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:21:57,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:21:57,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:21:57,052 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:21:57,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-16 11:21:57,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data/6070e620b/c61697438cc245ea951b78f3a89c054d/FLAG8df6631bf [2022-11-16 11:21:57,939 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:21:57,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2022-11-16 11:21:57,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data/6070e620b/c61697438cc245ea951b78f3a89c054d/FLAG8df6631bf [2022-11-16 11:21:58,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/data/6070e620b/c61697438cc245ea951b78f3a89c054d [2022-11-16 11:21:58,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:21:58,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:21:58,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:58,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:21:58,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:21:58,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6903d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:58, skipping insertion in model container [2022-11-16 11:21:58,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:58" (1/1) ... [2022-11-16 11:21:58,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:21:58,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:21:58,441 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-16 11:21:58,447 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-16 11:21:59,117 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,118 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,118 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,119 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,120 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,134 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,134 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,136 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,137 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,139 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,140 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,140 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,141 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,331 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:21:59,332 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:21:59,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:21:59,335 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:21:59,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:21:59,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:21:59,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:21:59,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:21:59,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:21:59,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:21:59,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:59,476 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:21:59,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:21:59,523 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-16 11:21:59,524 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-16 11:21:59,610 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,610 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,611 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,612 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,613 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,619 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,620 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,621 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,621 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,623 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,623 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,624 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,624 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:21:59,660 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:21:59,660 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:21:59,661 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:21:59,663 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:21:59,663 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:21:59,664 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:21:59,664 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:21:59,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:21:59,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:21:59,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:59,691 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:21:59,704 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2022-11-16 11:21:59,705 WARN L229 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_68564e87-529e-4526-b261-8345fbae6431/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2022-11-16 11:21:59,740 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,741 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,741 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,742 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,742 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,750 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,750 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,751 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,752 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,753 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,754 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,754 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,754 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:21:59,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:21:59,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:21:59,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:21:59,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:21:59,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:21:59,775 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:21:59,775 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:21:59,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:21:59,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:21:59,777 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:21:59,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:22:00,049 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:22:00,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00 WrapperNode [2022-11-16 11:22:00,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:22:00,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:22:00,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:22:00,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:22:00,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,148 INFO L138 Inliner]: procedures = 611, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2022-11-16 11:22:00,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:22:00,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:22:00,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:22:00,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:22:00,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,219 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:22:00,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:22:00,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:22:00,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:22:00,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (1/1) ... [2022-11-16 11:22:00,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:22:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:22:00,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:22:00,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:22:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:22:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:22:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:22:00,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:22:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:22:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:22:00,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:22:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 11:22:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:22:00,318 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:22:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:22:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-16 11:22:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-16 11:22:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-16 11:22:00,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-16 11:22:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-16 11:22:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-16 11:22:00,672 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:22:00,674 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:22:00,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:22:00,966 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:22:00,966 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:22:00,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:00 BoogieIcfgContainer [2022-11-16 11:22:00,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:22:00,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:22:00,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:22:00,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:22:00,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:21:58" (1/3) ... [2022-11-16 11:22:00,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dbaacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:22:00, skipping insertion in model container [2022-11-16 11:22:00,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:22:00" (2/3) ... [2022-11-16 11:22:00,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dbaacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:22:00, skipping insertion in model container [2022-11-16 11:22:00,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:22:00" (3/3) ... [2022-11-16 11:22:00,977 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2022-11-16 11:22:00,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:22:00,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:22:01,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:22:01,051 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;@47aa7ac4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:22:01,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:22:01,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 11:22:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:22:01,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:01,065 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:01,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:01,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2022-11-16 11:22:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:01,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360212768] [2022-11-16 11:22:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:01,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:01,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:01,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:01,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:22:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:01,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:22:01,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:22:01,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:01,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:01,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360212768] [2022-11-16 11:22:01,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360212768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:01,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:01,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:22:01,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028217900] [2022-11-16 11:22:01,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:01,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:22:01,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:01,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:22:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:22:01,439 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 11:22:01,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:01,482 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2022-11-16 11:22:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:22:01,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2022-11-16 11:22:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:01,494 INFO L225 Difference]: With dead ends: 117 [2022-11-16 11:22:01,494 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 11:22:01,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:22:01,501 INFO L413 NwaCegarLoop]: 75 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, 75 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 [2022-11-16 11:22:01,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:22:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 11:22:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-16 11:22:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:22:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-16 11:22:01,542 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2022-11-16 11:22:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:01,542 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-16 11:22:01,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 11:22:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-16 11:22:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:22:01,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:01,546 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:01,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-16 11:22:01,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:01,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:01,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:01,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2022-11-16 11:22:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:01,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902488166] [2022-11-16 11:22:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:01,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:01,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:01,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:01,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:22:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:01,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:22:01,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:22:02,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:22:02,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:02,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902488166] [2022-11-16 11:22:02,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902488166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:02,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:02,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-16 11:22:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106369960] [2022-11-16 11:22:02,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:02,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:22:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:02,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:22:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:22:02,289 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 11:22:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:02,525 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-16 11:22:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:22:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2022-11-16 11:22:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:02,530 INFO L225 Difference]: With dead ends: 58 [2022-11-16 11:22:02,530 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 11:22:02,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:22:02,533 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:02,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 252 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:22:02,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 11:22:02,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-16 11:22:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:22:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-16 11:22:02,561 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2022-11-16 11:22:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:02,562 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-16 11:22:02,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 11:22:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-16 11:22:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 11:22:02,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:02,567 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-16 11:22:02,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:02,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:02,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:02,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:02,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2022-11-16 11:22:02,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:02,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019620685] [2022-11-16 11:22:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:02,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:02,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:02,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:02,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:22:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:02,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:22:02,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:22:03,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:22:03,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019620685] [2022-11-16 11:22:03,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019620685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:03,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:03,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-16 11:22:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537010255] [2022-11-16 11:22:03,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:03,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:22:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:22:03,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:22:03,617 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 11:22:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:03,939 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-11-16 11:22:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:22:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 42 [2022-11-16 11:22:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:03,942 INFO L225 Difference]: With dead ends: 62 [2022-11-16 11:22:03,943 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 11:22:03,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:22:03,944 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:03,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 480 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-16 11:22:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 11:22:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-16 11:22:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:22:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2022-11-16 11:22:03,967 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2022-11-16 11:22:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:03,968 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2022-11-16 11:22:03,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 11:22:03,970 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2022-11-16 11:22:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 11:22:03,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:03,971 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2022-11-16 11:22:03,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:04,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:04,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2022-11-16 11:22:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389904850] [2022-11-16 11:22:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:04,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:04,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:04,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:04,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:22:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:04,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:22:04,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-16 11:22:04,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:22:04,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:04,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389904850] [2022-11-16 11:22:04,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389904850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:04,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:04,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:22:04,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398411037] [2022-11-16 11:22:04,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:04,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:22:04,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:22:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:22:04,586 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 11:22:04,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:04,738 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-11-16 11:22:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:22:04,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2022-11-16 11:22:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:04,740 INFO L225 Difference]: With dead ends: 66 [2022-11-16 11:22:04,740 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 11:22:04,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:22:04,742 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:04,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 249 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:22:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 11:22:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-16 11:22:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:22:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-11-16 11:22:04,757 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2022-11-16 11:22:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:04,758 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-11-16 11:22:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 11:22:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-11-16 11:22:04,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:22:04,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:04,760 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:04,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:04,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:04,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:04,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2022-11-16 11:22:04,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:04,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576697008] [2022-11-16 11:22:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:04,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:04,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:04,979 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:04,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:22:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:05,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:22:05,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:22:05,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 11:22:05,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:05,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576697008] [2022-11-16 11:22:05,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576697008] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:05,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:22:05,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2022-11-16 11:22:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993281885] [2022-11-16 11:22:05,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:05,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:22:05,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:05,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:22:05,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:22:05,585 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-16 11:22:05,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:05,746 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-11-16 11:22:05,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:22:05,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2022-11-16 11:22:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:05,749 INFO L225 Difference]: With dead ends: 107 [2022-11-16 11:22:05,749 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 11:22:05,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:22:05,750 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:05,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 185 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:22:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 11:22:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2022-11-16 11:22:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 11:22:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2022-11-16 11:22:05,770 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2022-11-16 11:22:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:05,771 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2022-11-16 11:22:05,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-16 11:22:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2022-11-16 11:22:05,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:22:05,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:05,774 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:05,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:05,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2022-11-16 11:22:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:05,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955083644] [2022-11-16 11:22:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:05,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:05,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:06,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:22:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:22:06,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:22:06,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 11:22:06,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:06,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955083644] [2022-11-16 11:22:06,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955083644] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:06,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:22:06,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-16 11:22:06,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66175787] [2022-11-16 11:22:06,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:06,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:22:06,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:22:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:22:06,518 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 11:22:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:06,559 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2022-11-16 11:22:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:22:06,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2022-11-16 11:22:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:06,562 INFO L225 Difference]: With dead ends: 131 [2022-11-16 11:22:06,562 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 11:22:06,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:22:06,563 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:06,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 123 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:22:06,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 11:22:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-16 11:22:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 11:22:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2022-11-16 11:22:06,581 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2022-11-16 11:22:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:06,581 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2022-11-16 11:22:06,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 11:22:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2022-11-16 11:22:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 11:22:06,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:06,583 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:06,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:06,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2022-11-16 11:22:06,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:06,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766551399] [2022-11-16 11:22:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:06,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:06,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:06,805 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:06,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 11:22:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:22:06,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:22:07,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 11:22:07,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:07,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766551399] [2022-11-16 11:22:07,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766551399] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:07,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:22:07,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2022-11-16 11:22:07,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914263906] [2022-11-16 11:22:07,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:07,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:22:07,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:07,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:22:07,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:22:07,479 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-16 11:22:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:07,658 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2022-11-16 11:22:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:22:07,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2022-11-16 11:22:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:07,660 INFO L225 Difference]: With dead ends: 100 [2022-11-16 11:22:07,660 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 11:22:07,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:22:07,661 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 25 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:07,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 262 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:22:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 11:22:07,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-16 11:22:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:22:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2022-11-16 11:22:07,677 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2022-11-16 11:22:07,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:07,678 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2022-11-16 11:22:07,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-16 11:22:07,678 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2022-11-16 11:22:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 11:22:07,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:07,680 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:07,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:07,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:07,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:07,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2022-11-16 11:22:07,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:07,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603905946] [2022-11-16 11:22:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:07,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:07,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:07,899 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:07,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 11:22:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:08,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:22:08,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:22:08,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-16 11:22:08,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:08,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603905946] [2022-11-16 11:22:08,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603905946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:08,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:08,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-16 11:22:08,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235426541] [2022-11-16 11:22:08,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:08,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:22:08,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:08,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:22:08,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:22:08,793 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-16 11:22:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:09,039 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2022-11-16 11:22:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:22:09,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 71 [2022-11-16 11:22:09,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:09,042 INFO L225 Difference]: With dead ends: 122 [2022-11-16 11:22:09,042 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 11:22:09,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:22:09,043 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:09,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 475 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 20 Unchecked, 0.2s Time] [2022-11-16 11:22:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 11:22:09,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-16 11:22:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:22:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-11-16 11:22:09,056 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2022-11-16 11:22:09,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:09,057 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-11-16 11:22:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-16 11:22:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-11-16 11:22:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 11:22:09,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:09,058 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:09,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:09,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:09,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:09,274 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2022-11-16 11:22:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:09,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464123023] [2022-11-16 11:22:09,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:22:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:09,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:09,275 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:09,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 11:22:09,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:22:09,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:09,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:22:09,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:22:10,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-16 11:22:10,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:10,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464123023] [2022-11-16 11:22:10,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464123023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:10,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:10,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-11-16 11:22:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197038862] [2022-11-16 11:22:10,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:10,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:22:10,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:10,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:22:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:22:10,745 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-16 11:22:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:11,738 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2022-11-16 11:22:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:22:11,739 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 75 [2022-11-16 11:22:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:11,740 INFO L225 Difference]: With dead ends: 130 [2022-11-16 11:22:11,740 INFO L226 Difference]: Without dead ends: 77 [2022-11-16 11:22:11,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:22:11,741 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:11,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 487 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-11-16 11:22:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-16 11:22:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-16 11:22:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:22:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2022-11-16 11:22:11,755 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2022-11-16 11:22:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:11,755 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2022-11-16 11:22:11,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-16 11:22:11,756 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2022-11-16 11:22:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 11:22:11,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:11,757 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:11,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:11,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:11,966 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2022-11-16 11:22:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:11,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81601204] [2022-11-16 11:22:11,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:22:11,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:11,969 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:11,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 11:22:12,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:22:12,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:12,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:22:12,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-16 11:22:12,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-16 11:22:12,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:12,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81601204] [2022-11-16 11:22:12,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81601204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:12,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:12,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-16 11:22:12,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592035786] [2022-11-16 11:22:12,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:12,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:22:12,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:12,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:22:12,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:22:12,833 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 11:22:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:13,813 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2022-11-16 11:22:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:22:13,814 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 83 [2022-11-16 11:22:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:13,815 INFO L225 Difference]: With dead ends: 113 [2022-11-16 11:22:13,815 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 11:22:13,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:22:13,817 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 67 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:13,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 407 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 145 Invalid, 0 Unknown, 20 Unchecked, 0.6s Time] [2022-11-16 11:22:13,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 11:22:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2022-11-16 11:22:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 11:22:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2022-11-16 11:22:13,831 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2022-11-16 11:22:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:13,832 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2022-11-16 11:22:13,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 11:22:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2022-11-16 11:22:13,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 11:22:13,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:13,834 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:13,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:14,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:14,049 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:14,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2022-11-16 11:22:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:14,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815668206] [2022-11-16 11:22:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:14,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:14,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:14,051 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:14,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 11:22:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:14,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:22:14,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 11:22:15,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:22:16,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:16,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815668206] [2022-11-16 11:22:16,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815668206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:16,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:16,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2022-11-16 11:22:16,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524271568] [2022-11-16 11:22:16,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:16,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:22:16,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:16,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:22:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:22:16,515 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-16 11:22:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:16,940 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2022-11-16 11:22:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:22:16,941 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 85 [2022-11-16 11:22:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:16,942 INFO L225 Difference]: With dead ends: 142 [2022-11-16 11:22:16,942 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 11:22:16,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:22:16,944 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:16,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 736 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-11-16 11:22:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 11:22:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-16 11:22:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 11:22:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2022-11-16 11:22:16,958 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2022-11-16 11:22:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:16,958 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2022-11-16 11:22:16,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-16 11:22:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2022-11-16 11:22:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 11:22:16,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:16,960 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:16,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:17,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:17,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:17,177 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2022-11-16 11:22:17,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:17,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020011628] [2022-11-16 11:22:17,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:22:17,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:17,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:17,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:22:17,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 11:22:17,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:22:17,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:17,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-16 11:22:17,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:17,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:22:18,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 11:22:18,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:18,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:22:19,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:19,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:19,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-16 11:22:19,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:19,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:19,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:19,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:19,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:19,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2022-11-16 11:22:20,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:20,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:20,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:20,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:20,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:20,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:20,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:20,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:20,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2022-11-16 11:22:21,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:21,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 76 [2022-11-16 11:22:22,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 87 [2022-11-16 11:22:22,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:22,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 93 [2022-11-16 11:22:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:26,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:26,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:26,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:26,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:26,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:26,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:26,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:26,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 57 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 173 [2022-11-16 11:22:33,150 INFO L321 Elim1Store]: treesize reduction 122, result has 5.4 percent of original size [2022-11-16 11:22:33,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 29 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 16 case distinctions, treesize of input 127 treesize of output 61 [2022-11-16 11:22:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 11:22:33,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:34,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:34,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020011628] [2022-11-16 11:22:34,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020011628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:34,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1678730967] [2022-11-16 11:22:34,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:22:34,265 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:22:34,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:22:34,267 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:22:34,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-16 11:22:35,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:22:35,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:22:35,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-16 11:22:35,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:35,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:22:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:36,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 11:22:37,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:37,644 INFO L321 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-11-16 11:22:37,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2022-11-16 11:22:38,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:38,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:38,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:38,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:38,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:38,411 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:22:38,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 45 [2022-11-16 11:22:39,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:39,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:39,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:39,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:39,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:39,253 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:22:39,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2022-11-16 11:22:40,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:40,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:40,230 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:22:40,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 72 [2022-11-16 11:22:41,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:41,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:41,296 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:22:41,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 84 [2022-11-16 11:22:42,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:42,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:42,593 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:22:42,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 98 [2022-11-16 11:22:43,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:43,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:43,784 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:22:43,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 82 treesize of output 102 [2022-11-16 11:22:51,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:22:51,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:22:51,208 INFO L321 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-11-16 11:22:51,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 57 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 9 case distinctions, treesize of input 132 treesize of output 183 [2022-11-16 11:22:59,995 INFO L321 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-11-16 11:22:59,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 29 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 34 case distinctions, treesize of input 134 treesize of output 64 [2022-11-16 11:23:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 41 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 11:23:00,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:00,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1678730967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:23:00,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:00,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37] total 72 [2022-11-16 11:23:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131103774] [2022-11-16 11:23:00,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:00,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-16 11:23:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:00,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-16 11:23:00,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5497, Unknown=0, NotChecked=0, Total=5852 [2022-11-16 11:23:00,085 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 72 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 67 states have internal predecessors, (111), 12 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-16 11:23:21,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:23:29,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:23:35,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:23:37,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:23:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:46,150 INFO L93 Difference]: Finished difference Result 188 states and 212 transitions. [2022-11-16 11:23:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:23:46,151 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 67 states have internal predecessors, (111), 12 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) Word has length 87 [2022-11-16 11:23:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:46,153 INFO L225 Difference]: With dead ends: 188 [2022-11-16 11:23:46,154 INFO L226 Difference]: Without dead ends: 184 [2022-11-16 11:23:46,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 95 SyntacticMatches, 18 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4206 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=902, Invalid=11308, Unknown=0, NotChecked=0, Total=12210 [2022-11-16 11:23:46,158 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 241 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 385 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:46,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1632 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2096 Invalid, 0 Unknown, 385 Unchecked, 36.3s Time] [2022-11-16 11:23:46,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-16 11:23:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 158. [2022-11-16 11:23:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 113 states have (on average 1.079646017699115) internal successors, (122), 115 states have internal predecessors, (122), 28 states have call successors, (28), 19 states have call predecessors, (28), 16 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-16 11:23:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2022-11-16 11:23:46,203 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 87 [2022-11-16 11:23:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:46,204 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2022-11-16 11:23:46,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 67 states have internal predecessors, (111), 12 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-16 11:23:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2022-11-16 11:23:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 11:23:46,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:46,206 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:46,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-11-16 11:23:46,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-16 11:23:46,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:46,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:23:46,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1360942848, now seen corresponding path program 1 times [2022-11-16 11:23:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:46,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048796253] [2022-11-16 11:23:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:46,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:46,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:46,609 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:23:46,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 11:23:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:46,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:23:46,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-16 11:23:47,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:23:47,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:47,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048796253] [2022-11-16 11:23:47,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048796253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:47,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:47,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:23:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840838123] [2022-11-16 11:23:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:47,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:23:47,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:23:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:23:47,377 INFO L87 Difference]: Start difference. First operand 158 states and 174 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-16 11:23:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:47,602 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2022-11-16 11:23:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:23:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 89 [2022-11-16 11:23:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:47,606 INFO L225 Difference]: With dead ends: 184 [2022-11-16 11:23:47,606 INFO L226 Difference]: Without dead ends: 132 [2022-11-16 11:23:47,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:23:47,608 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:47,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 179 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-11-16 11:23:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-16 11:23:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-16 11:23:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 97 states have internal predecessors, (100), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:23:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2022-11-16 11:23:47,649 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 89 [2022-11-16 11:23:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:47,650 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2022-11-16 11:23:47,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-16 11:23:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2022-11-16 11:23:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 11:23:47,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:47,652 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:47,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:47,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:23:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -250047413, now seen corresponding path program 3 times [2022-11-16 11:23:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:47,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819966617] [2022-11-16 11:23:47,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:23:47,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:47,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:47,863 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:23:47,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 11:23:48,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-16 11:23:48,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:48,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:23:48,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 41 proven. 87 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:23:49,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 84 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 11:23:52,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:52,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819966617] [2022-11-16 11:23:52,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819966617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:52,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:52,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 38 [2022-11-16 11:23:52,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623814809] [2022-11-16 11:23:52,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:52,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:23:52,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:52,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:23:52,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:23:52,820 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 37 states have internal predecessors, (86), 8 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-16 11:24:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:04,242 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2022-11-16 11:24:04,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:24:04,246 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 37 states have internal predecessors, (86), 8 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 89 [2022-11-16 11:24:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:04,247 INFO L225 Difference]: With dead ends: 209 [2022-11-16 11:24:04,247 INFO L226 Difference]: Without dead ends: 157 [2022-11-16 11:24:04,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=656, Invalid=2650, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 11:24:04,249 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 503 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:04,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 723 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 836 Invalid, 0 Unknown, 78 Unchecked, 3.3s Time] [2022-11-16 11:24:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-16 11:24:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2022-11-16 11:24:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 117 states have (on average 1.0512820512820513) internal successors, (123), 119 states have internal predecessors, (123), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:24:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2022-11-16 11:24:04,304 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 89 [2022-11-16 11:24:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:04,304 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2022-11-16 11:24:04,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 37 states have internal predecessors, (86), 8 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-16 11:24:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2022-11-16 11:24:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 11:24:04,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:04,306 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:04,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:04,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:24:04,514 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:04,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash -59588295, now seen corresponding path program 4 times [2022-11-16 11:24:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967175668] [2022-11-16 11:24:04,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:24:04,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:24:04,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:04,517 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:24:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 11:24:04,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:24:04,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:04,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 11:24:04,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 38 proven. 269 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:24:07,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 9 proven. 269 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-16 11:24:13,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:24:13,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967175668] [2022-11-16 11:24:13,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967175668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:13,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:13,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 56 [2022-11-16 11:24:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486608289] [2022-11-16 11:24:13,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:13,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-16 11:24:13,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:24:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-16 11:24:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=2566, Unknown=0, NotChecked=0, Total=3080 [2022-11-16 11:24:13,220 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 53 states have internal predecessors, (115), 10 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-16 11:24:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:18,943 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2022-11-16 11:24:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:24:18,945 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 53 states have internal predecessors, (115), 10 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) Word has length 103 [2022-11-16 11:24:18,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:18,946 INFO L225 Difference]: With dead ends: 219 [2022-11-16 11:24:18,946 INFO L226 Difference]: Without dead ends: 183 [2022-11-16 11:24:18,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=728, Invalid=3304, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 11:24:18,948 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 380 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:18,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1896 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1331 Invalid, 0 Unknown, 139 Unchecked, 4.8s Time] [2022-11-16 11:24:18,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-16 11:24:19,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 156. [2022-11-16 11:24:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 119 states have (on average 1.050420168067227) internal successors, (125), 121 states have internal predecessors, (125), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:24:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2022-11-16 11:24:19,004 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 103 [2022-11-16 11:24:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:19,004 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2022-11-16 11:24:19,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 53 states have internal predecessors, (115), 10 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-16 11:24:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2022-11-16 11:24:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 11:24:19,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:19,006 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:19,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:19,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:24:19,207 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:19,207 INFO L85 PathProgramCache]: Analyzing trace with hash 609255285, now seen corresponding path program 1 times [2022-11-16 11:24:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969155465] [2022-11-16 11:24:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:19,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:24:19,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:19,209 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:24:19,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 11:24:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 11:24:19,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:21,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:21,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:21,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:21,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:21,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:21,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:21,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:21,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:21,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:21,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:21,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:21,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:21,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:21,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:21,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 79 [2022-11-16 11:24:28,316 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2022-11-16 11:24:28,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 64 treesize of output 31 [2022-11-16 11:24:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 54 proven. 96 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:24:28,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:29,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:24:29,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969155465] [2022-11-16 11:24:29,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969155465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:29,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [840146] [2022-11-16 11:24:29,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:29,268 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:24:29,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:24:29,269 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:24:29,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-16 11:24:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:30,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 11:24:30,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:32,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:32,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:32,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:32,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:32,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:32,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:32,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:24:32,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:32,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:32,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:32,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:32,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:32,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:32,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:32,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 79 [2022-11-16 11:24:37,785 INFO L321 Elim1Store]: treesize reduction 62, result has 4.6 percent of original size [2022-11-16 11:24:37,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 64 treesize of output 31 [2022-11-16 11:24:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 60 proven. 84 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:24:37,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:37,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [840146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:37,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:37,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 42 [2022-11-16 11:24:37,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339902471] [2022-11-16 11:24:37,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:37,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 11:24:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:24:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 11:24:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2037, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 11:24:37,870 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 42 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 37 states have internal predecessors, (82), 9 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 11:24:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:48,746 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2022-11-16 11:24:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:24:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 37 states have internal predecessors, (82), 9 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 108 [2022-11-16 11:24:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:48,749 INFO L225 Difference]: With dead ends: 208 [2022-11-16 11:24:48,749 INFO L226 Difference]: Without dead ends: 161 [2022-11-16 11:24:48,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 159 SyntacticMatches, 23 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=335, Invalid=3825, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 11:24:48,751 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 257 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:48,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1249 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1317 Invalid, 0 Unknown, 176 Unchecked, 8.1s Time] [2022-11-16 11:24:48,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-16 11:24:48,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 158. [2022-11-16 11:24:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 121 states have (on average 1.0495867768595042) internal successors, (127), 123 states have internal predecessors, (127), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:24:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2022-11-16 11:24:48,818 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 108 [2022-11-16 11:24:48,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:48,819 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2022-11-16 11:24:48,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 37 states have internal predecessors, (82), 9 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-16 11:24:48,819 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2022-11-16 11:24:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 11:24:48,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:48,821 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 6, 6, 6, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:48,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:49,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:49,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:24:49,244 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:49,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:49,245 INFO L85 PathProgramCache]: Analyzing trace with hash -55356389, now seen corresponding path program 5 times [2022-11-16 11:24:49,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:49,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154933956] [2022-11-16 11:24:49,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:24:49,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:24:49,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:49,247 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:24:49,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 11:24:52,706 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-11-16 11:24:52,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:52,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-16 11:24:52,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:52,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:24:53,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 11:24:53,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-16 11:24:54,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-11-16 11:24:55,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 53 [2022-11-16 11:24:55,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2022-11-16 11:24:56,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2022-11-16 11:24:57,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 95 [2022-11-16 11:24:58,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:58,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 100 [2022-11-16 11:24:59,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:59,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 114 [2022-11-16 11:25:00,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:00,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 126 [2022-11-16 11:25:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:01,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 140 [2022-11-16 11:25:02,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:02,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 154 [2022-11-16 11:25:04,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:04,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 168 [2022-11-16 11:25:05,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:05,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 178 [2022-11-16 11:25:07,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:07,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 191 [2022-11-16 11:25:08,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:08,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 121 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 205 [2022-11-16 11:25:20,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:20,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:20,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:20,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:20,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:20,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:20,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:20,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:20,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 149 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 294 [2022-11-16 11:25:24,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:24,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:24,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:24,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:24,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:24,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:24,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:24,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:25:24,589 INFO L217 Elim1Store]: Index analysis took 174 ms [2022-11-16 11:25:24,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 241 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 396 [2022-11-16 11:25:44,255 INFO L321 Elim1Store]: treesize reduction 250, result has 2.7 percent of original size [2022-11-16 11:25:44,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 34 select indices, 34 select index equivalence classes, 121 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 32 case distinctions, treesize of input 239 treesize of output 109 [2022-11-16 11:25:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 42 proven. 284 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:25:44,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:46,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:25:46,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154933956] [2022-11-16 11:25:46,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154933956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:46,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1860001687] [2022-11-16 11:25:46,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:25:46,480 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:25:46,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:25:46,483 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:25:46,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68564e87-529e-4526-b261-8345fbae6431/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process