./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_string_new_from_c_str_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 d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:23:14,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:23:14,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:23:14,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:23:14,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:23:14,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:23:14,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:23:14,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:23:14,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:23:14,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:23:14,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:23:14,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:23:14,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:23:14,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:23:14,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:23:14,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:23:14,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:23:14,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:23:14,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:23:14,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:23:14,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:23:14,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:23:14,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:23:14,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:23:14,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:23:14,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:23:14,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:23:14,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:23:14,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:23:14,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:23:14,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:23:14,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:23:14,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:23:14,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:23:14,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:23:14,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:23:14,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:23:14,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:23:14,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:23:14,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:23:14,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:23:14,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:23:14,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:23:14,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:23:14,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:23:14,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:23:14,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:23:14,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:23:14,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:23:14,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:23:14,512 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:23:14,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:23:14,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:23:14,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:23:14,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:23:14,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:23:14,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:23:14,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:23:14,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:23:14,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:23:14,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:23:14,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:23:14,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:23:14,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:23:14,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:23:14,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:23:14,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:23:14,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:23:14,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:23:14,522 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:23:14,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:23:14,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:23:14,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd [2021-12-28 03:23:14,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:23:14,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:23:14,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:23:14,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:23:14,821 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:23:14,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-12-28 03:23:14,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e33eb269/79d7a729bd634aed91a5719aec8f0223/FLAG34b20d386 [2021-12-28 03:23:15,620 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:23:15,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-12-28 03:23:15,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e33eb269/79d7a729bd634aed91a5719aec8f0223/FLAG34b20d386 [2021-12-28 03:23:15,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e33eb269/79d7a729bd634aed91a5719aec8f0223 [2021-12-28 03:23:15,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:23:15,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:23:15,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:23:15,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:23:15,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:23:15,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:23:15" (1/1) ... [2021-12-28 03:23:15,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df6e065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:15, skipping insertion in model container [2021-12-28 03:23:15,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:23:15" (1/1) ... [2021-12-28 03:23:15,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:23:16,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:23:16,190 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_string_new_from_c_str_harness.i[4499,4512] [2021-12-28 03:23:16,195 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_string_new_from_c_str_harness.i[4559,4572] [2021-12-28 03:23:16,755 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:16,755 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:16,756 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:16,756 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:16,757 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:16,776 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:16,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:16,778 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:16,778 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,038 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:23:17,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:23:17,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:23:17,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:23:17,051 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:23:17,055 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:23:17,055 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:23:17,056 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:23:17,056 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:23:17,057 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:23:17,173 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:23:17,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:23:17,375 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:23:17,387 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_string_new_from_c_str_harness.i[4499,4512] [2021-12-28 03:23:17,388 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_string_new_from_c_str_harness.i[4559,4572] [2021-12-28 03:23:17,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,455 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:23:17,464 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:23:17,465 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:23:17,465 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:23:17,466 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:23:17,467 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:23:17,467 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:23:17,467 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:23:17,468 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:23:17,468 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:23:17,488 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:23:17,564 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:17,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:23:17,904 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:23:17,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17 WrapperNode [2021-12-28 03:23:17,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:23:17,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:23:17,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:23:17,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:23:17,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,125 INFO L137 Inliner]: procedures = 690, calls = 2735, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 812 [2021-12-28 03:23:18,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:23:18,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:23:18,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:23:18,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:23:18,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:23:18,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:23:18,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:23:18,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:23:18,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (1/1) ... [2021-12-28 03:23:18,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:23:18,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:23:18,252 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) [2021-12-28 03:23:18,265 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 [2021-12-28 03:23:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-28 03:23:18,287 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-28 03:23:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:23:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:23:18,315 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:23:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-28 03:23:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-28 03:23:18,316 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-28 03:23:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:23:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:23:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:23:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:23:18,316 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:23:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:23:18,316 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:23:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:23:18,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:23:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:23:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-28 03:23:18,318 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-28 03:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:23:18,318 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-28 03:23:18,318 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-28 03:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-28 03:23:18,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-28 03:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2021-12-28 03:23:18,319 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2021-12-28 03:23:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:23:18,319 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:23:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-28 03:23:18,319 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-28 03:23:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:23:18,319 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:23:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:23:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-28 03:23:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:23:18,616 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:23:18,624 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:23:18,806 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-12-28 03:23:19,595 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:23:19,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:23:19,604 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 03:23:19,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:23:19 BoogieIcfgContainer [2021-12-28 03:23:19,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:23:19,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:23:19,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:23:19,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:23:19,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:23:15" (1/3) ... [2021-12-28 03:23:19,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a90ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:23:19, skipping insertion in model container [2021-12-28 03:23:19,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:17" (2/3) ... [2021-12-28 03:23:19,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a90ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:23:19, skipping insertion in model container [2021-12-28 03:23:19,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:23:19" (3/3) ... [2021-12-28 03:23:19,614 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_c_str_harness.i [2021-12-28 03:23:19,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:23:19,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:23:19,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:23:19,683 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 [2021-12-28 03:23:19,684 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:23:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-28 03:23:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-28 03:23:19,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:19,712 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:23:19,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:19,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:19,719 INFO L85 PathProgramCache]: Analyzing trace with hash -555983859, now seen corresponding path program 1 times [2021-12-28 03:23:19,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:19,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822980218] [2021-12-28 03:23:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:19,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:23:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-28 03:23:20,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:20,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822980218] [2021-12-28 03:23:20,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822980218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:20,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:20,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:23:20,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538596256] [2021-12-28 03:23:20,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:20,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:23:20,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:23:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:23:20,511 INFO L87 Difference]: Start difference. First operand has 136 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 03:23:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:20,903 INFO L93 Difference]: Finished difference Result 283 states and 370 transitions. [2021-12-28 03:23:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:23:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2021-12-28 03:23:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:20,914 INFO L225 Difference]: With dead ends: 283 [2021-12-28 03:23:20,915 INFO L226 Difference]: Without dead ends: 147 [2021-12-28 03:23:20,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:23:20,932 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 99 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:20,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 198 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:23:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-28 03:23:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2021-12-28 03:23:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.15) internal successors, (92), 81 states have internal predecessors, (92), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-28 03:23:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2021-12-28 03:23:20,997 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 74 [2021-12-28 03:23:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:20,998 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2021-12-28 03:23:20,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 03:23:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2021-12-28 03:23:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-28 03:23:21,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:21,003 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:23:21,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:23:21,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1001240943, now seen corresponding path program 1 times [2021-12-28 03:23:21,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:21,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592739275] [2021-12-28 03:23:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:21,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:23:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-28 03:23:21,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592739275] [2021-12-28 03:23:21,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592739275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:21,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:21,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:23:21,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698139572] [2021-12-28 03:23:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:21,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:23:21,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:23:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:23:21,418 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-28 03:23:21,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:21,994 INFO L93 Difference]: Finished difference Result 196 states and 238 transitions. [2021-12-28 03:23:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:23:21,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2021-12-28 03:23:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:21,997 INFO L225 Difference]: With dead ends: 196 [2021-12-28 03:23:21,997 INFO L226 Difference]: Without dead ends: 152 [2021-12-28 03:23:21,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:23:21,998 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 101 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:21,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 383 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:23:22,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-28 03:23:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 135. [2021-12-28 03:23:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 85 states have internal predecessors, (96), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2021-12-28 03:23:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 164 transitions. [2021-12-28 03:23:22,018 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 164 transitions. Word has length 74 [2021-12-28 03:23:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:22,019 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 164 transitions. [2021-12-28 03:23:22,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-28 03:23:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 164 transitions. [2021-12-28 03:23:22,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-28 03:23:22,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:22,021 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:23:22,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:23:22,021 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1994019405, now seen corresponding path program 1 times [2021-12-28 03:23:22,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080867990] [2021-12-28 03:23:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:22,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:23:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-28 03:23:22,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:22,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080867990] [2021-12-28 03:23:22,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080867990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:22,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:22,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:23:22,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3610129] [2021-12-28 03:23:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:22,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:23:22,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:22,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:23:22,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:23:22,355 INFO L87 Difference]: Start difference. First operand 135 states and 164 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-28 03:23:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:23,112 INFO L93 Difference]: Finished difference Result 217 states and 267 transitions. [2021-12-28 03:23:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:23:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 80 [2021-12-28 03:23:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:23,115 INFO L225 Difference]: With dead ends: 217 [2021-12-28 03:23:23,115 INFO L226 Difference]: Without dead ends: 178 [2021-12-28 03:23:23,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:23:23,117 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 180 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:23,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 473 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:23:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-28 03:23:23,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 140. [2021-12-28 03:23:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 89 states have internal predecessors, (100), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2021-12-28 03:23:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2021-12-28 03:23:23,132 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 80 [2021-12-28 03:23:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:23,133 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2021-12-28 03:23:23,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-28 03:23:23,133 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2021-12-28 03:23:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-28 03:23:23,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:23,136 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:23:23,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:23:23,137 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1920697878, now seen corresponding path program 1 times [2021-12-28 03:23:23,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:23,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150303666] [2021-12-28 03:23:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:23,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:23:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-28 03:23:23,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:23,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150303666] [2021-12-28 03:23:23,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150303666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:23,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:23,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-28 03:23:23,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287931441] [2021-12-28 03:23:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:23,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 03:23:23,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:23,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 03:23:23,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:23:23,524 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 03:23:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:24,660 INFO L93 Difference]: Finished difference Result 178 states and 219 transitions. [2021-12-28 03:23:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 03:23:24,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 82 [2021-12-28 03:23:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:24,662 INFO L225 Difference]: With dead ends: 178 [2021-12-28 03:23:24,662 INFO L226 Difference]: Without dead ends: 161 [2021-12-28 03:23:24,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:23:24,663 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 185 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:24,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 752 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 03:23:24,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-28 03:23:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 126. [2021-12-28 03:23:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 78 states have internal predecessors, (86), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-28 03:23:24,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2021-12-28 03:23:24,683 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 82 [2021-12-28 03:23:24,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:24,684 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2021-12-28 03:23:24,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 03:23:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2021-12-28 03:23:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 03:23:24,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:24,689 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-12-28 03:23:24,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:23:24,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:24,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -870191708, now seen corresponding path program 1 times [2021-12-28 03:23:24,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:24,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972824405] [2021-12-28 03:23:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:24,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:23:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:23:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:23:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:23:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:23:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:23:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:23:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:23:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:23:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-28 03:23:25,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:25,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972824405] [2021-12-28 03:23:25,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972824405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:25,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:25,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:23:25,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41038060] [2021-12-28 03:23:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:25,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:23:25,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:25,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:23:25,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:23:25,089 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-28 03:23:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:25,896 INFO L93 Difference]: Finished difference Result 206 states and 249 transitions. [2021-12-28 03:23:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:23:25,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 123 [2021-12-28 03:23:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:25,899 INFO L225 Difference]: With dead ends: 206 [2021-12-28 03:23:25,899 INFO L226 Difference]: Without dead ends: 151 [2021-12-28 03:23:25,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:23:25,901 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 159 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:25,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 464 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:23:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-28 03:23:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2021-12-28 03:23:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 82 states have internal predecessors, (90), 33 states have call successors, (33), 15 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2021-12-28 03:23:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2021-12-28 03:23:25,913 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 123 [2021-12-28 03:23:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:25,914 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2021-12-28 03:23:25,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-28 03:23:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2021-12-28 03:23:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 03:23:25,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:25,917 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-12-28 03:23:25,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:23:25,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1724885987, now seen corresponding path program 1 times [2021-12-28 03:23:25,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:25,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864508397] [2021-12-28 03:23:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:25,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:23:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:23:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:23:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:23:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:23:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:23:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:23:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:23:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 03:23:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:23:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-28 03:23:26,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864508397] [2021-12-28 03:23:26,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864508397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:26,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:26,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 03:23:26,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210257189] [2021-12-28 03:23:26,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:26,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:23:26,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:26,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:23:26,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:23:26,309 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:23:27,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:27,173 INFO L93 Difference]: Finished difference Result 212 states and 257 transitions. [2021-12-28 03:23:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:23:27,173 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 129 [2021-12-28 03:23:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:27,175 INFO L225 Difference]: With dead ends: 212 [2021-12-28 03:23:27,175 INFO L226 Difference]: Without dead ends: 143 [2021-12-28 03:23:27,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-12-28 03:23:27,176 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 276 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:27,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 468 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:23:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-28 03:23:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 124. [2021-12-28 03:23:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 77 states have internal predecessors, (83), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-28 03:23:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 146 transitions. [2021-12-28 03:23:27,185 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 146 transitions. Word has length 129 [2021-12-28 03:23:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:27,185 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 146 transitions. [2021-12-28 03:23:27,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:23:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 146 transitions. [2021-12-28 03:23:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 03:23:27,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:27,187 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-28 03:23:27,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:23:27,187 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:27,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1745997560, now seen corresponding path program 1 times [2021-12-28 03:23:27,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:27,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068760406] [2021-12-28 03:23:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:27,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:23:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:23:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:23:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:23:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:23:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:23:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:23:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:23:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:28,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:23:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-28 03:23:28,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:28,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068760406] [2021-12-28 03:23:28,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068760406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:28,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:28,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-28 03:23:28,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29963239] [2021-12-28 03:23:28,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:28,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-28 03:23:28,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:28,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-28 03:23:28,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:23:28,134 INFO L87 Difference]: Start difference. First operand 124 states and 146 transitions. Second operand has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-28 03:23:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:30,333 INFO L93 Difference]: Finished difference Result 190 states and 229 transitions. [2021-12-28 03:23:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-28 03:23:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) Word has length 134 [2021-12-28 03:23:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:30,335 INFO L225 Difference]: With dead ends: 190 [2021-12-28 03:23:30,336 INFO L226 Difference]: Without dead ends: 143 [2021-12-28 03:23:30,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2021-12-28 03:23:30,337 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 87 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:30,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 1127 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 03:23:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-28 03:23:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2021-12-28 03:23:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 88 states have internal predecessors, (93), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2021-12-28 03:23:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 162 transitions. [2021-12-28 03:23:30,348 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 162 transitions. Word has length 134 [2021-12-28 03:23:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:30,348 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 162 transitions. [2021-12-28 03:23:30,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.25) internal successors, (65), 17 states have internal predecessors, (65), 8 states have call successors, (24), 6 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-28 03:23:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 162 transitions. [2021-12-28 03:23:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-28 03:23:30,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:30,350 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-28 03:23:30,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:23:30,351 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:30,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1524709556, now seen corresponding path program 1 times [2021-12-28 03:23:30,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393829614] [2021-12-28 03:23:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:30,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:23:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:23:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:23:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:23:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:23:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:23:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:23:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:23:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 03:23:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-28 03:23:30,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:30,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393829614] [2021-12-28 03:23:30,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393829614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:30,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:30,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 03:23:30,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735424994] [2021-12-28 03:23:30,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:30,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 03:23:30,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:30,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 03:23:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:23:30,712 INFO L87 Difference]: Start difference. First operand 137 states and 162 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:23:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:31,542 INFO L93 Difference]: Finished difference Result 225 states and 261 transitions. [2021-12-28 03:23:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:23:31,542 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 140 [2021-12-28 03:23:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:31,543 INFO L225 Difference]: With dead ends: 225 [2021-12-28 03:23:31,543 INFO L226 Difference]: Without dead ends: 119 [2021-12-28 03:23:31,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:23:31,544 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 91 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:31,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 478 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:23:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-28 03:23:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-28 03:23:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.082191780821918) internal successors, (79), 74 states have internal predecessors, (79), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-28 03:23:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2021-12-28 03:23:31,554 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 140 [2021-12-28 03:23:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:31,554 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2021-12-28 03:23:31,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:23:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2021-12-28 03:23:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 03:23:31,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:31,556 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-28 03:23:31,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:23:31,556 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:31,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1517224244, now seen corresponding path program 1 times [2021-12-28 03:23:31,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:31,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579497432] [2021-12-28 03:23:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:31,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:23:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:23:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:23:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:23:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:23:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:23:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:23:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:23:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:23:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-28 03:23:32,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:32,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579497432] [2021-12-28 03:23:32,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579497432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:32,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:32,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:23:32,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734624813] [2021-12-28 03:23:32,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:32,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:23:32,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:32,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:23:32,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:23:32,010 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:23:32,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:32,647 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2021-12-28 03:23:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:23:32,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2021-12-28 03:23:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:32,649 INFO L225 Difference]: With dead ends: 166 [2021-12-28 03:23:32,649 INFO L226 Difference]: Without dead ends: 120 [2021-12-28 03:23:32,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:23:32,650 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 117 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:32,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 296 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:23:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-28 03:23:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-28 03:23:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 75 states have internal predecessors, (80), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-28 03:23:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-12-28 03:23:32,657 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 135 [2021-12-28 03:23:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:32,658 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-28 03:23:32,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:23:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2021-12-28 03:23:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-28 03:23:32,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:32,660 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-28 03:23:32,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:23:32,660 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash -473758278, now seen corresponding path program 1 times [2021-12-28 03:23:32,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:32,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231402999] [2021-12-28 03:23:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:32,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:23:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:23:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:23:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:23:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:23:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:23:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:23:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:23:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:23:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-28 03:23:33,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:33,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231402999] [2021-12-28 03:23:33,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231402999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:23:33,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836992760] [2021-12-28 03:23:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:33,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:23:33,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:23:33,611 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) [2021-12-28 03:23:33,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:23:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:34,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 118 conjunts are in the unsatisfiable core [2021-12-28 03:23:34,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:35,059 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 [2021-12-28 03:23:40,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:40,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:40,466 INFO L353 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-12-28 03:23:40,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 33 [2021-12-28 03:23:40,567 INFO L353 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-28 03:23:40,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 36 [2021-12-28 03:23:41,456 INFO L353 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-28 03:23:41,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 71 [2021-12-28 03:23:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-28 03:23:41,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:46,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836992760] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:23:46,180 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:23:46,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 37] total 57 [2021-12-28 03:23:46,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503892260] [2021-12-28 03:23:46,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:23:46,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-28 03:23:46,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-28 03:23:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=4118, Unknown=3, NotChecked=0, Total=4290 [2021-12-28 03:23:46,183 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) [2021-12-28 03:23:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:51,766 INFO L93 Difference]: Finished difference Result 174 states and 206 transitions. [2021-12-28 03:23:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-28 03:23:51,767 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) Word has length 136 [2021-12-28 03:23:51,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:51,768 INFO L225 Difference]: With dead ends: 174 [2021-12-28 03:23:51,768 INFO L226 Difference]: Without dead ends: 123 [2021-12-28 03:23:51,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=465, Invalid=9038, Unknown=3, NotChecked=0, Total=9506 [2021-12-28 03:23:51,771 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 223 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 3958 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 4420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 3958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:51,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1601 Invalid, 4420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 3958 Invalid, 0 Unknown, 217 Unchecked, 3.4s Time] [2021-12-28 03:23:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-28 03:23:51,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-12-28 03:23:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 75 states have (on average 1.08) internal successors, (81), 76 states have internal predecessors, (81), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-28 03:23:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2021-12-28 03:23:51,782 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 136 [2021-12-28 03:23:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:51,782 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2021-12-28 03:23:51,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 50 states have (on average 2.48) internal successors, (124), 42 states have internal predecessors, (124), 15 states have call successors, (43), 10 states have call predecessors, (43), 16 states have return successors, (40), 19 states have call predecessors, (40), 14 states have call successors, (40) [2021-12-28 03:23:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2021-12-28 03:23:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-28 03:23:51,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:51,785 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-28 03:23:51,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:52,002 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,SelfDestructingSolverStorable9 [2021-12-28 03:23:52,002 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1103785842, now seen corresponding path program 2 times [2021-12-28 03:23:52,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:52,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184940903] [2021-12-28 03:23:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:52,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:23:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:23:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:23:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:23:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:23:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:23:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:23:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:23:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:23:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 03:23:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:23:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:23:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:23:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:23:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:23:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:53,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:23:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-28 03:23:53,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:53,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184940903] [2021-12-28 03:23:53,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184940903] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:23:53,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716740157] [2021-12-28 03:23:53,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:23:53,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:23:53,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:23:53,053 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) [2021-12-28 03:23:53,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:23:58,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:23:58,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:23:58,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-28 03:23:58,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:58,503 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 [2021-12-28 03:24:00,674 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memcpy_#t~loopctr1326_10| Int) (v_ArrVal_1313 Int) (v_ArrVal_1305 Int) (|v_#Ultimate.C_memcpy_#t~loopctr1326_11| Int)) (and (<= 0 |v_#Ultimate.C_memcpy_#t~loopctr1326_10|) (<= (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_10| 1) |v_#Ultimate.C_memcpy_#t~loopctr1326_11|) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| (store (store (select |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base|) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_10| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_1305) (+ |v_#Ultimate.C_memcpy_#t~loopctr1326_11| |c_#Ultimate.C_memcpy_dest.offset|) v_ArrVal_1313)) |c_#memory_int|))) is different from true [2021-12-28 03:24:06,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:06,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:06,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:06,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:06,276 INFO L353 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-12-28 03:24:06,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 42 [2021-12-28 03:24:06,352 INFO L353 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-28 03:24:06,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2021-12-28 03:24:07,060 INFO L353 Elim1Store]: treesize reduction 53, result has 13.1 percent of original size [2021-12-28 03:24:07,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 61 [2021-12-28 03:24:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 2 not checked. [2021-12-28 03:24:07,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:24:12,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716740157] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:24:12,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:24:12,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28] total 50 [2021-12-28 03:24:12,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193101913] [2021-12-28 03:24:12,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:24:12,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-28 03:24:12,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:24:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-28 03:24:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=3164, Unknown=3, NotChecked=112, Total=3422 [2021-12-28 03:24:12,273 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 50 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 37 states have internal predecessors, (107), 11 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (33), 15 states have call predecessors, (33), 10 states have call successors, (33)