./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:59:21,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:59:21,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:59:21,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:59:21,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:59:21,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:59:22,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:59:22,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:59:22,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:59:22,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:59:22,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:59:22,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:59:22,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:59:22,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:59:22,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:59:22,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:59:22,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:59:22,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:59:22,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:59:22,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:59:22,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:59:22,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:59:22,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:59:22,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:59:22,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:59:22,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:59:22,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:59:22,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:59:22,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:59:22,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:59:22,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:59:22,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:59:22,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:59:22,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:59:22,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:59:22,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:59:22,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:59:22,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:59:22,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:59:22,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:59:22,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:59:22,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 13:59:22,065 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:59:22,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:59:22,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:59:22,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:59:22,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:59:22,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:59:22,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:59:22,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:59:22,068 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:59:22,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:59:22,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:59:22,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:59:22,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:59:22,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:59:22,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:59:22,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:59:22,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:59:22,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:59:22,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:59:22,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:59:22,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:59:22,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:59:22,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:59:22,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:59:22,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:59:22,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:59:22,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:59:22,071 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:59:22,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:59:22,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:59:22,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:59:22,072 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 [2021-12-22 13:59:22,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:59:22,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:59:22,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:59:22,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:59:22,284 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:59:22,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-12-22 13:59:22,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d29c387ea/e0c9c18c23144bc8b3d1df7dd55bfeb8/FLAG656a74b3e [2021-12-22 13:59:22,901 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:59:22,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-12-22 13:59:22,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d29c387ea/e0c9c18c23144bc8b3d1df7dd55bfeb8/FLAG656a74b3e [2021-12-22 13:59:23,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d29c387ea/e0c9c18c23144bc8b3d1df7dd55bfeb8 [2021-12-22 13:59:23,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:59:23,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:59:23,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:59:23,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:59:23,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:59:23,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:59:23" (1/1) ... [2021-12-22 13:59:23,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71fe317b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:23, skipping insertion in model container [2021-12-22 13:59:23,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:59:23" (1/1) ... [2021-12-22 13:59:23,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:59:23,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:59:23,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-12-22 13:59:23,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-12-22 13:59:24,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,307 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,318 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,319 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,319 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,596 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:59:24,597 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:59:24,597 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:59:24,603 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:59:24,604 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:59:24,605 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:59:24,605 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:59:24,605 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:59:24,606 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:59:24,606 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:59:24,715 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:59:24,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,941 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,941 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:24,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:59:25,002 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:59:25,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-12-22 13:59:25,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-12-22 13:59:25,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,056 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,056 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,114 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:59:25,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:59:25,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:59:25,116 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:59:25,116 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:59:25,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:59:25,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:59:25,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:59:25,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:59:25,118 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:59:25,136 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:59:25,211 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,211 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,219 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,229 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,231 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,231 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,232 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:25,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:59:25,423 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:59:25,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25 WrapperNode [2021-12-22 13:59:25,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:59:25,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:59:25,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:59:25,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:59:25,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,584 INFO L137 Inliner]: procedures = 775, calls = 2445, calls flagged for inlining = 71, calls inlined = 16, statements flattened = 721 [2021-12-22 13:59:25,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:59:25,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:59:25,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:59:25,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:59:25,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:59:25,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:59:25,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:59:25,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:59:25,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (1/1) ... [2021-12-22 13:59:25,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:59:25,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:25,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:59:25,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:59:25,757 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2021-12-22 13:59:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 13:59:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-22 13:59:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:59:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-22 13:59:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:59:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:59:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 13:59:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-22 13:59:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-22 13:59:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-22 13:59:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-22 13:59:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-22 13:59:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-22 13:59:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:59:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-22 13:59:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-22 13:59:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 13:59:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 13:59:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 13:59:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 13:59:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-22 13:59:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-22 13:59:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:59:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-22 13:59:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-22 13:59:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-22 13:59:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-22 13:59:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-22 13:59:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-22 13:59:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:59:26,014 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:59:26,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:59:26,483 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:59:26,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:59:26,488 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:59:26,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:59:26 BoogieIcfgContainer [2021-12-22 13:59:26,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:59:26,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:59:26,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:59:26,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:59:26,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:59:23" (1/3) ... [2021-12-22 13:59:26,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c10e6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:59:26, skipping insertion in model container [2021-12-22 13:59:26,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:25" (2/3) ... [2021-12-22 13:59:26,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c10e6dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:59:26, skipping insertion in model container [2021-12-22 13:59:26,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:59:26" (3/3) ... [2021-12-22 13:59:26,495 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clean_up_harness.i [2021-12-22 13:59:26,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:59:26,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:59:26,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:59:26,534 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:59:26,534 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 13:59:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 127 states have internal predecessors, (151), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-22 13:59:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 13:59:26,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:26,577 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:26,577 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:26,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:26,581 INFO L85 PathProgramCache]: Analyzing trace with hash -623915720, now seen corresponding path program 1 times [2021-12-22 13:59:26,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:26,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096562212] [2021-12-22 13:59:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:26,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:27,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:27,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096562212] [2021-12-22 13:59:27,086 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-22 13:59:27,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225307276] [2021-12-22 13:59:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:27,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:27,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:27,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:27,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:59:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:27,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 13:59:27,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-22 13:59:27,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:27,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225307276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:27,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:27,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:59:27,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013993782] [2021-12-22 13:59:27,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:27,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:59:27,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:27,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:59:27,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:59:27,759 INFO L87 Difference]: Start difference. First operand has 194 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 127 states have internal predecessors, (151), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 13:59:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:27,790 INFO L93 Difference]: Finished difference Result 383 states and 508 transitions. [2021-12-22 13:59:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:59:27,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 134 [2021-12-22 13:59:27,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:27,799 INFO L225 Difference]: With dead ends: 383 [2021-12-22 13:59:27,799 INFO L226 Difference]: Without dead ends: 187 [2021-12-22 13:59:27,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:59:27,805 INFO L933 BasicCegarLoop]: 241 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, 241 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 [2021-12-22 13:59:27,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:59:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-22 13:59:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-12-22 13:59:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 121 states have internal predecessors, (140), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-22 13:59:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 233 transitions. [2021-12-22 13:59:27,843 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 233 transitions. Word has length 134 [2021-12-22 13:59:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:27,844 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 233 transitions. [2021-12-22 13:59:27,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 13:59:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 233 transitions. [2021-12-22 13:59:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 13:59:27,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:27,847 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:27,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 13:59:28,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-22 13:59:28,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:28,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:28,069 INFO L85 PathProgramCache]: Analyzing trace with hash -428434944, now seen corresponding path program 1 times [2021-12-22 13:59:28,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:28,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105753036] [2021-12-22 13:59:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:28,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:28,146 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:59:28,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535100522] [2021-12-22 13:59:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:28,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:28,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:28,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:28,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:59:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:28,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 13:59:28,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-22 13:59:28,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:28,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:28,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105753036] [2021-12-22 13:59:28,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 13:59:28,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535100522] [2021-12-22 13:59:28,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535100522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:28,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:28,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:59:28,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991370834] [2021-12-22 13:59:28,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:28,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:59:28,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:59:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:59:28,815 INFO L87 Difference]: Start difference. First operand 187 states and 233 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 13:59:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:28,850 INFO L93 Difference]: Finished difference Result 337 states and 421 transitions. [2021-12-22 13:59:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:59:28,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 134 [2021-12-22 13:59:28,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:28,852 INFO L225 Difference]: With dead ends: 337 [2021-12-22 13:59:28,852 INFO L226 Difference]: Without dead ends: 192 [2021-12-22 13:59:28,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:59:28,854 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 2 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:28,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 916 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:59:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-12-22 13:59:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-12-22 13:59:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 124 states have (on average 1.1612903225806452) internal successors, (144), 125 states have internal predecessors, (144), 47 states have call successors, (47), 19 states have call predecessors, (47), 20 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2021-12-22 13:59:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 238 transitions. [2021-12-22 13:59:28,868 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 238 transitions. Word has length 134 [2021-12-22 13:59:28,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:28,868 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 238 transitions. [2021-12-22 13:59:28,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-22 13:59:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 238 transitions. [2021-12-22 13:59:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-22 13:59:28,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:28,871 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:28,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-22 13:59:29,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-22 13:59:29,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -447704184, now seen corresponding path program 1 times [2021-12-22 13:59:29,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:29,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287207522] [2021-12-22 13:59:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:29,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:59:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:59:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:59:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 13:59:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:59:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:59:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:59:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 13:59:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 13:59:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-22 13:59:29,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287207522] [2021-12-22 13:59:29,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287207522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:29,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:29,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 13:59:29,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882531374] [2021-12-22 13:59:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:29,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:59:29,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:59:29,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:59:29,540 INFO L87 Difference]: Start difference. First operand 192 states and 238 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-22 13:59:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:30,382 INFO L93 Difference]: Finished difference Result 348 states and 437 transitions. [2021-12-22 13:59:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:59:30,383 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 140 [2021-12-22 13:59:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:30,385 INFO L225 Difference]: With dead ends: 348 [2021-12-22 13:59:30,386 INFO L226 Difference]: Without dead ends: 217 [2021-12-22 13:59:30,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-12-22 13:59:30,388 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 170 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:30,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 1066 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 13:59:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-22 13:59:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 197. [2021-12-22 13:59:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.1640625) internal successors, (149), 130 states have internal predecessors, (149), 47 states have call successors, (47), 19 states have call predecessors, (47), 21 states have return successors, (50), 47 states have call predecessors, (50), 46 states have call successors, (50) [2021-12-22 13:59:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 246 transitions. [2021-12-22 13:59:30,402 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 246 transitions. Word has length 140 [2021-12-22 13:59:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:30,402 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 246 transitions. [2021-12-22 13:59:30,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-22 13:59:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 246 transitions. [2021-12-22 13:59:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-22 13:59:30,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:30,404 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:30,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:59:30,404 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1286400266, now seen corresponding path program 1 times [2021-12-22 13:59:30,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:30,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563526459] [2021-12-22 13:59:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:30,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 13:59:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:59:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:59:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 13:59:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:59:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:59:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:59:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 13:59:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 13:59:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-22 13:59:30,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:30,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563526459] [2021-12-22 13:59:30,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563526459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:30,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:30,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:59:30,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826424876] [2021-12-22 13:59:30,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:30,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:59:30,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:30,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:59:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:59:30,784 INFO L87 Difference]: Start difference. First operand 197 states and 246 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-22 13:59:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:31,169 INFO L93 Difference]: Finished difference Result 355 states and 449 transitions. [2021-12-22 13:59:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:59:31,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2021-12-22 13:59:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:31,171 INFO L225 Difference]: With dead ends: 355 [2021-12-22 13:59:31,171 INFO L226 Difference]: Without dead ends: 219 [2021-12-22 13:59:31,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:59:31,173 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 194 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:31,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 730 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:59:31,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-12-22 13:59:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 199. [2021-12-22 13:59:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 129 states have (on average 1.1627906976744187) internal successors, (150), 131 states have internal predecessors, (150), 48 states have call successors, (48), 19 states have call predecessors, (48), 21 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2021-12-22 13:59:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 249 transitions. [2021-12-22 13:59:31,186 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 249 transitions. Word has length 140 [2021-12-22 13:59:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:31,187 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 249 transitions. [2021-12-22 13:59:31,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-22 13:59:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 249 transitions. [2021-12-22 13:59:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-22 13:59:31,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:31,189 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:31,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:59:31,189 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:31,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1325960714, now seen corresponding path program 1 times [2021-12-22 13:59:31,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:31,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168653933] [2021-12-22 13:59:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:31,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 13:59:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 13:59:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:59:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:59:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:59:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 13:59:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 13:59:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 13:59:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 13:59:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-22 13:59:31,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168653933] [2021-12-22 13:59:31,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168653933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:31,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:31,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:59:31,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386713384] [2021-12-22 13:59:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:31,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:59:31,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:59:31,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:59:31,511 INFO L87 Difference]: Start difference. First operand 199 states and 249 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 13:59:32,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:32,104 INFO L93 Difference]: Finished difference Result 357 states and 457 transitions. [2021-12-22 13:59:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 13:59:32,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 146 [2021-12-22 13:59:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:32,106 INFO L225 Difference]: With dead ends: 357 [2021-12-22 13:59:32,106 INFO L226 Difference]: Without dead ends: 217 [2021-12-22 13:59:32,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:59:32,107 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 149 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:32,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1046 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:59:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-22 13:59:32,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 199. [2021-12-22 13:59:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 129 states have (on average 1.1550387596899225) internal successors, (149), 131 states have internal predecessors, (149), 48 states have call successors, (48), 19 states have call predecessors, (48), 21 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2021-12-22 13:59:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 248 transitions. [2021-12-22 13:59:32,118 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 248 transitions. Word has length 146 [2021-12-22 13:59:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:32,118 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 248 transitions. [2021-12-22 13:59:32,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 13:59:32,119 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 248 transitions. [2021-12-22 13:59:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 13:59:32,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:32,120 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:32,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:59:32,121 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash -133220748, now seen corresponding path program 1 times [2021-12-22 13:59:32,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:32,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585289161] [2021-12-22 13:59:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:32,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:59:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 13:59:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 13:59:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-22 13:59:32,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:32,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585289161] [2021-12-22 13:59:32,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585289161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:32,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:32,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 13:59:32,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934348166] [2021-12-22 13:59:32,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:32,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 13:59:32,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 13:59:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:59:32,544 INFO L87 Difference]: Start difference. First operand 199 states and 248 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-22 13:59:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:33,183 INFO L93 Difference]: Finished difference Result 232 states and 287 transitions. [2021-12-22 13:59:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 13:59:33,183 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 151 [2021-12-22 13:59:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:33,185 INFO L225 Difference]: With dead ends: 232 [2021-12-22 13:59:33,185 INFO L226 Difference]: Without dead ends: 230 [2021-12-22 13:59:33,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:59:33,186 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 220 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:33,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 989 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:59:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-22 13:59:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 203. [2021-12-22 13:59:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 132 states have (on average 1.1515151515151516) internal successors, (152), 134 states have internal predecessors, (152), 48 states have call successors, (48), 20 states have call predecessors, (48), 22 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2021-12-22 13:59:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 251 transitions. [2021-12-22 13:59:33,196 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 251 transitions. Word has length 151 [2021-12-22 13:59:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:33,197 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 251 transitions. [2021-12-22 13:59:33,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-22 13:59:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 251 transitions. [2021-12-22 13:59:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-22 13:59:33,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:33,199 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:33,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:59:33,199 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash -777949396, now seen corresponding path program 1 times [2021-12-22 13:59:33,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:33,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419526693] [2021-12-22 13:59:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:33,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:59:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 13:59:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 13:59:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 13:59:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 13:59:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 13:59:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-22 13:59:34,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:34,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419526693] [2021-12-22 13:59:34,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419526693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:34,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:34,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-22 13:59:34,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691239593] [2021-12-22 13:59:34,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:34,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-22 13:59:34,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:34,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-22 13:59:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-12-22 13:59:34,134 INFO L87 Difference]: Start difference. First operand 203 states and 251 transitions. Second operand has 22 states, 21 states have (on average 3.619047619047619) internal successors, (76), 18 states have internal predecessors, (76), 13 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 14 states have call predecessors, (27), 13 states have call successors, (27) [2021-12-22 13:59:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:35,797 INFO L93 Difference]: Finished difference Result 259 states and 314 transitions. [2021-12-22 13:59:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 13:59:35,798 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.619047619047619) internal successors, (76), 18 states have internal predecessors, (76), 13 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 14 states have call predecessors, (27), 13 states have call successors, (27) Word has length 169 [2021-12-22 13:59:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:35,802 INFO L225 Difference]: With dead ends: 259 [2021-12-22 13:59:35,802 INFO L226 Difference]: Without dead ends: 233 [2021-12-22 13:59:35,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2021-12-22 13:59:35,804 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 370 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:35,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 993 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 13:59:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-12-22 13:59:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 203. [2021-12-22 13:59:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 132 states have (on average 1.143939393939394) internal successors, (151), 134 states have internal predecessors, (151), 48 states have call successors, (48), 20 states have call predecessors, (48), 22 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2021-12-22 13:59:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 250 transitions. [2021-12-22 13:59:35,814 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 250 transitions. Word has length 169 [2021-12-22 13:59:35,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:35,815 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 250 transitions. [2021-12-22 13:59:35,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.619047619047619) internal successors, (76), 18 states have internal predecessors, (76), 13 states have call successors, (28), 5 states have call predecessors, (28), 4 states have return successors, (27), 14 states have call predecessors, (27), 13 states have call successors, (27) [2021-12-22 13:59:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 250 transitions. [2021-12-22 13:59:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-22 13:59:35,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:35,817 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:35,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:59:35,817 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash 442702791, now seen corresponding path program 1 times [2021-12-22 13:59:35,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:35,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312574744] [2021-12-22 13:59:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:35,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:35,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:59:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 13:59:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 13:59:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 13:59:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 13:59:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-22 13:59:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2021-12-22 13:59:36,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:36,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312574744] [2021-12-22 13:59:36,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312574744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:36,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:36,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:59:36,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843706747] [2021-12-22 13:59:36,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:36,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:59:36,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:59:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:59:36,142 INFO L87 Difference]: Start difference. First operand 203 states and 250 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-22 13:59:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:36,415 INFO L93 Difference]: Finished difference Result 307 states and 371 transitions. [2021-12-22 13:59:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:59:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2021-12-22 13:59:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:36,417 INFO L225 Difference]: With dead ends: 307 [2021-12-22 13:59:36,417 INFO L226 Difference]: Without dead ends: 221 [2021-12-22 13:59:36,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:59:36,418 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 133 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:36,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 511 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:59:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-22 13:59:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 204. [2021-12-22 13:59:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 133 states have (on average 1.1428571428571428) internal successors, (152), 135 states have internal predecessors, (152), 48 states have call successors, (48), 20 states have call predecessors, (48), 22 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2021-12-22 13:59:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2021-12-22 13:59:36,430 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 176 [2021-12-22 13:59:36,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:36,431 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2021-12-22 13:59:36,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-22 13:59:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2021-12-22 13:59:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-22 13:59:36,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:36,433 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:36,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:59:36,434 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:36,434 INFO L85 PathProgramCache]: Analyzing trace with hash -578365563, now seen corresponding path program 1 times [2021-12-22 13:59:36,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:36,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923248455] [2021-12-22 13:59:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:36,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:59:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 13:59:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 13:59:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 13:59:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 13:59:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-22 13:59:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2021-12-22 13:59:36,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:36,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923248455] [2021-12-22 13:59:36,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923248455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:36,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:36,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:59:36,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335906587] [2021-12-22 13:59:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:36,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:59:36,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:59:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:59:36,763 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-22 13:59:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:37,228 INFO L93 Difference]: Finished difference Result 331 states and 405 transitions. [2021-12-22 13:59:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:59:37,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 176 [2021-12-22 13:59:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:37,230 INFO L225 Difference]: With dead ends: 331 [2021-12-22 13:59:37,230 INFO L226 Difference]: Without dead ends: 221 [2021-12-22 13:59:37,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:59:37,231 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 93 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:37,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 698 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:59:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-22 13:59:37,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 204. [2021-12-22 13:59:37,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 133 states have (on average 1.1353383458646618) internal successors, (151), 135 states have internal predecessors, (151), 48 states have call successors, (48), 20 states have call predecessors, (48), 22 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2021-12-22 13:59:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 250 transitions. [2021-12-22 13:59:37,243 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 250 transitions. Word has length 176 [2021-12-22 13:59:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:37,245 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 250 transitions. [2021-12-22 13:59:37,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-22 13:59:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 250 transitions. [2021-12-22 13:59:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-22 13:59:37,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:37,247 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:37,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:59:37,248 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash -361857032, now seen corresponding path program 1 times [2021-12-22 13:59:37,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276013168] [2021-12-22 13:59:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:37,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:59:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 13:59:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 13:59:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 13:59:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 13:59:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-22 13:59:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-22 13:59:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-12-22 13:59:37,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:37,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276013168] [2021-12-22 13:59:37,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276013168] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:37,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096834923] [2021-12-22 13:59:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:37,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:37,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:37,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:37,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:59:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:38,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 13:59:38,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 101 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-22 13:59:38,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:59:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-12-22 13:59:38,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096834923] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:59:38,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:59:38,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 24 [2021-12-22 13:59:38,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480953068] [2021-12-22 13:59:38,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:59:38,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 13:59:38,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 13:59:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-12-22 13:59:38,886 INFO L87 Difference]: Start difference. First operand 204 states and 250 transitions. Second operand has 24 states, 20 states have (on average 6.45) internal successors, (129), 18 states have internal predecessors, (129), 7 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (52), 5 states have call predecessors, (52), 7 states have call successors, (52) [2021-12-22 13:59:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:40,413 INFO L93 Difference]: Finished difference Result 342 states and 420 transitions. [2021-12-22 13:59:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 13:59:40,414 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 6.45) internal successors, (129), 18 states have internal predecessors, (129), 7 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (52), 5 states have call predecessors, (52), 7 states have call successors, (52) Word has length 185 [2021-12-22 13:59:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:40,417 INFO L225 Difference]: With dead ends: 342 [2021-12-22 13:59:40,417 INFO L226 Difference]: Without dead ends: 230 [2021-12-22 13:59:40,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=1690, Unknown=0, NotChecked=0, Total=1980 [2021-12-22 13:59:40,418 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 504 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:40,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 1548 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 13:59:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-22 13:59:40,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 210. [2021-12-22 13:59:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 137 states have (on average 1.1313868613138687) internal successors, (155), 141 states have internal predecessors, (155), 48 states have call successors, (48), 20 states have call predecessors, (48), 24 states have return successors, (54), 48 states have call predecessors, (54), 47 states have call successors, (54) [2021-12-22 13:59:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 257 transitions. [2021-12-22 13:59:40,435 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 257 transitions. Word has length 185 [2021-12-22 13:59:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:40,436 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 257 transitions. [2021-12-22 13:59:40,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 6.45) internal successors, (129), 18 states have internal predecessors, (129), 7 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (52), 5 states have call predecessors, (52), 7 states have call successors, (52) [2021-12-22 13:59:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 257 transitions. [2021-12-22 13:59:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-22 13:59:40,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:40,438 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:40,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:40,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:40,647 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1707074820, now seen corresponding path program 1 times [2021-12-22 13:59:40,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:40,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798500904] [2021-12-22 13:59:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:40,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:59:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 13:59:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 13:59:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 13:59:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 13:59:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-22 13:59:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-22 13:59:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-12-22 13:59:41,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:41,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798500904] [2021-12-22 13:59:41,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798500904] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:41,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319692901] [2021-12-22 13:59:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:41,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:41,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:41,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:41,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 13:59:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:41,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2579 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:59:41,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-22 13:59:41,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:41,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319692901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:41,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:41,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-22 13:59:41,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664469875] [2021-12-22 13:59:41,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:41,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:59:41,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:59:41,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-22 13:59:41,872 INFO L87 Difference]: Start difference. First operand 210 states and 257 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-22 13:59:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:42,031 INFO L93 Difference]: Finished difference Result 327 states and 397 transitions. [2021-12-22 13:59:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:59:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 196 [2021-12-22 13:59:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:42,032 INFO L225 Difference]: With dead ends: 327 [2021-12-22 13:59:42,032 INFO L226 Difference]: Without dead ends: 210 [2021-12-22 13:59:42,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-12-22 13:59:42,033 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 275 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:42,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 663 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:59:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-22 13:59:42,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2021-12-22 13:59:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 135 states have (on average 1.1333333333333333) internal successors, (153), 138 states have internal predecessors, (153), 48 states have call successors, (48), 20 states have call predecessors, (48), 23 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2021-12-22 13:59:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 252 transitions. [2021-12-22 13:59:42,043 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 252 transitions. Word has length 196 [2021-12-22 13:59:42,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:42,044 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 252 transitions. [2021-12-22 13:59:42,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-22 13:59:42,044 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 252 transitions. [2021-12-22 13:59:42,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-22 13:59:42,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:42,046 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:42,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-22 13:59:42,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:42,259 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1755111832, now seen corresponding path program 1 times [2021-12-22 13:59:42,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:42,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904997486] [2021-12-22 13:59:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:42,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:59:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 13:59:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 13:59:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 13:59:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-22 13:59:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-22 13:59:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-22 13:59:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-12-22 13:59:42,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:42,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904997486] [2021-12-22 13:59:42,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904997486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:42,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:42,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 13:59:42,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849021188] [2021-12-22 13:59:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:42,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 13:59:42,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 13:59:42,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:59:42,735 INFO L87 Difference]: Start difference. First operand 207 states and 252 transitions. Second operand has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-22 13:59:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:43,264 INFO L93 Difference]: Finished difference Result 230 states and 278 transitions. [2021-12-22 13:59:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:59:43,264 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 207 [2021-12-22 13:59:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:43,265 INFO L225 Difference]: With dead ends: 230 [2021-12-22 13:59:43,266 INFO L226 Difference]: Without dead ends: 228 [2021-12-22 13:59:43,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:59:43,266 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 122 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:43,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 1344 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:59:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-22 13:59:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 211. [2021-12-22 13:59:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 138 states have (on average 1.1304347826086956) internal successors, (156), 141 states have internal predecessors, (156), 48 states have call successors, (48), 21 states have call predecessors, (48), 24 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2021-12-22 13:59:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 255 transitions. [2021-12-22 13:59:43,277 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 255 transitions. Word has length 207 [2021-12-22 13:59:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:43,277 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 255 transitions. [2021-12-22 13:59:43,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-22 13:59:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 255 transitions. [2021-12-22 13:59:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-12-22 13:59:43,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:43,279 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:43,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:59:43,279 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2124808202, now seen corresponding path program 1 times [2021-12-22 13:59:43,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:43,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184409039] [2021-12-22 13:59:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:43,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:59:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 13:59:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:59:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 13:59:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 13:59:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 13:59:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:59:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:59:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:59:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:59:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:59:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 13:59:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:59:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:59:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 13:59:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 13:59:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 13:59:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-22 13:59:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-22 13:59:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-22 13:59:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-22 13:59:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-22 13:59:43,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:43,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184409039] [2021-12-22 13:59:43,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184409039] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:59:43,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320426853] [2021-12-22 13:59:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:43,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:43,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:43,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:43,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 13:59:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:44,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2649 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-22 13:59:44,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-12-22 13:59:44,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:44,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320426853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:44,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:59:44,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2021-12-22 13:59:44,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737108895] [2021-12-22 13:59:44,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:44,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:59:44,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:44,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:59:44,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:59:44,478 INFO L87 Difference]: Start difference. First operand 211 states and 255 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-22 13:59:44,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:44,720 INFO L93 Difference]: Finished difference Result 375 states and 454 transitions. [2021-12-22 13:59:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:59:44,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 213 [2021-12-22 13:59:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:44,722 INFO L225 Difference]: With dead ends: 375 [2021-12-22 13:59:44,722 INFO L226 Difference]: Without dead ends: 211 [2021-12-22 13:59:44,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-12-22 13:59:44,724 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 241 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:44,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 867 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:59:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-22 13:59:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 206. [2021-12-22 13:59:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 134 states have (on average 1.1194029850746268) internal successors, (150), 137 states have internal predecessors, (150), 48 states have call successors, (48), 21 states have call predecessors, (48), 23 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-22 13:59:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 248 transitions. [2021-12-22 13:59:44,734 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 248 transitions. Word has length 213 [2021-12-22 13:59:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:44,734 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 248 transitions. [2021-12-22 13:59:44,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-22 13:59:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 248 transitions. [2021-12-22 13:59:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-22 13:59:44,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:44,736 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:44,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:44,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-22 13:59:44,956 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:44,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:44,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2025906859, now seen corresponding path program 1 times [2021-12-22 13:59:44,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:44,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292476924] [2021-12-22 13:59:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:44,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:44,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:59:44,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351785349] [2021-12-22 13:59:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:44,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:44,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:44,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:44,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 14:00:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:10,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 124 conjunts are in the unsatisfiable core [2021-12-22 14:00:10,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:10,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 14:00:10,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-22 14:00:11,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 14:00:11,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-12-22 14:00:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 151 proven. 7 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-22 14:00:11,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:00:13,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-22 14:00:13,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-12-22 14:00:13,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34