./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_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_byte_cursor_eq_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 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:16:29,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:16:29,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:16:29,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:16:29,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:16:29,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:16:29,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:16:29,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:16:29,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:16:29,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:16:29,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:16:29,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:16:29,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:16:29,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:16:29,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:16:29,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:16:29,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:16:29,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:16:29,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:16:29,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:16:29,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:16:29,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:16:29,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:16:29,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:16:29,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:16:29,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:16:29,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:16:29,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:16:29,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:16:29,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:16:29,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:16:29,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:16:29,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:16:29,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:16:29,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:16:29,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:16:29,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:16:29,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:16:29,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:16:29,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:16:29,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:16:29,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:16:29,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:16:29,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:16:29,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:16:29,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:16:29,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:16:29,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:16:29,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:16:29,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:16:29,577 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:16:29,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:16:29,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:16:29,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:16:29,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:16:29,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:16:29,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:16:29,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:16:29,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:16:29,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:16:29,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:16:29,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:16:29,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:16:29,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:16:29,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:16:29,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:16:29,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:16:29,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:16:29,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:16:29,580 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:16:29,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:16:29,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:16:29,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c [2021-12-28 03:16:29,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:16:29,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:16:29,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:16:29,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:16:29,906 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:16:29,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-12-28 03:16:29,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8387e84b/a10a206e823d4253a68648308925ee26/FLAG02ea1d88c [2021-12-28 03:16:30,531 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:16:30,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-12-28 03:16:30,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8387e84b/a10a206e823d4253a68648308925ee26/FLAG02ea1d88c [2021-12-28 03:16:30,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8387e84b/a10a206e823d4253a68648308925ee26 [2021-12-28 03:16:30,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:16:30,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:16:30,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:16:30,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:16:30,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:16:30,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:16:30" (1/1) ... [2021-12-28 03:16:30,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf02af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:30, skipping insertion in model container [2021-12-28 03:16:30,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:16:30" (1/1) ... [2021-12-28 03:16:30,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:16:30,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:16:31,008 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_byte_cursor_eq_harness.i[4492,4505] [2021-12-28 03:16:31,012 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_byte_cursor_eq_harness.i[4552,4565] [2021-12-28 03:16:31,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,628 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,640 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,643 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:31,934 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:16:31,935 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:16:31,935 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:16:31,937 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:16:31,939 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:16:31,939 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:16:31,940 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:16:31,941 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:16:31,942 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:16:31,944 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:16:32,080 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:16:32,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:16:32,215 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:16:32,223 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_byte_cursor_eq_harness.i[4492,4505] [2021-12-28 03:16:32,224 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_byte_cursor_eq_harness.i[4552,4565] [2021-12-28 03:16:32,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,249 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,249 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,250 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,250 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:16:32,282 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:16:32,282 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:16:32,283 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:16:32,283 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:16:32,284 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:16:32,284 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:16:32,284 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:16:32,284 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:16:32,285 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:16:32,308 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:16:32,392 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:16:32,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:16:32,618 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:16:32,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32 WrapperNode [2021-12-28 03:16:32,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:16:32,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:16:32,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:16:32,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:16:32,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,772 INFO L137 Inliner]: procedures = 691, calls = 2650, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 873 [2021-12-28 03:16:32,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:16:32,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:16:32,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:16:32,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:16:32,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:16:32,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:16:32,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:16:32,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:16:32,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (1/1) ... [2021-12-28 03:16:32,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:16:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:32,880 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 03:16:32,900 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 03:16:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-28 03:16:32,911 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-28 03:16:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-28 03:16:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:16:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:16:32,912 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:16:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:16:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-12-28 03:16:32,912 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-12-28 03:16:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:16:32,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:16:32,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:16:32,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:16:32,914 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-28 03:16:32,914 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-28 03:16:32,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:16:32,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:16:32,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:16:32,915 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:16:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:16:32,916 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:16:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:16:32,916 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:16:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:16:32,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:16:32,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:16:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-12-28 03:16:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-12-28 03:16:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:16:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:16:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:16:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:16:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-12-28 03:16:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-12-28 03:16:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:16:33,186 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:16:33,196 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:16:33,909 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:16:33,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:16:33,916 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:16:33,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:16:33 BoogieIcfgContainer [2021-12-28 03:16:33,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:16:33,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:16:33,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:16:33,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:16:33,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:16:30" (1/3) ... [2021-12-28 03:16:33,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8399f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:16:33, skipping insertion in model container [2021-12-28 03:16:33,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:16:32" (2/3) ... [2021-12-28 03:16:33,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8399f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:16:33, skipping insertion in model container [2021-12-28 03:16:33,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:16:33" (3/3) ... [2021-12-28 03:16:33,924 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2021-12-28 03:16:33,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:16:33,928 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:16:33,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:16:33,968 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 03:16:33,969 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:16:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-12-28 03:16:33,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-28 03:16:33,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:33,988 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2021-12-28 03:16:33,988 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1846687754, now seen corresponding path program 1 times [2021-12-28 03:16:33,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:33,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206130538] [2021-12-28 03:16:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:33,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:16:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:16:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:16:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:16:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:16:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:16:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:16:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:16:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-28 03:16:34,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:34,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206130538] [2021-12-28 03:16:34,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206130538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:34,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:16:34,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:16:34,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777404921] [2021-12-28 03:16:34,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:34,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:16:34,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:16:34,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:16:34,671 INFO L87 Difference]: Start difference. First operand has 134 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 03:16:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:34,947 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2021-12-28 03:16:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:16:34,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2021-12-28 03:16:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:34,956 INFO L225 Difference]: With dead ends: 267 [2021-12-28 03:16:34,956 INFO L226 Difference]: Without dead ends: 131 [2021-12-28 03:16:34,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:16:34,971 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 102 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:34,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 196 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:16:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-28 03:16:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-12-28 03:16:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 77 states have internal predecessors, (92), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 03:16:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 171 transitions. [2021-12-28 03:16:35,048 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 171 transitions. Word has length 102 [2021-12-28 03:16:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:35,049 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 171 transitions. [2021-12-28 03:16:35,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 03:16:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 171 transitions. [2021-12-28 03:16:35,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-28 03:16:35,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:35,053 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2021-12-28 03:16:35,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:16:35,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash -192509010, now seen corresponding path program 1 times [2021-12-28 03:16:35,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:35,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111788218] [2021-12-28 03:16:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:35,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:16:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:16:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:16:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:16:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:16:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:16:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:16:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:16:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:16:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:16:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-28 03:16:35,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:35,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111788218] [2021-12-28 03:16:35,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111788218] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:35,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713341623] [2021-12-28 03:16:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:35,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:35,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:35,365 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 03:16:35,366 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 03:16:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:35,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:16:35,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-28 03:16:36,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:36,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713341623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:36,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:36,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-28 03:16:36,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616719676] [2021-12-28 03:16:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:36,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:16:36,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:36,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:16:36,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:16:36,038 INFO L87 Difference]: Start difference. First operand 128 states and 171 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 03:16:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:36,239 INFO L93 Difference]: Finished difference Result 252 states and 341 transitions. [2021-12-28 03:16:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:16:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 102 [2021-12-28 03:16:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:36,242 INFO L225 Difference]: With dead ends: 252 [2021-12-28 03:16:36,242 INFO L226 Difference]: Without dead ends: 131 [2021-12-28 03:16:36,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:16:36,244 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 186 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:36,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 343 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:16:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-28 03:16:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-12-28 03:16:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (45), 39 states have call predecessors, (45), 39 states have call successors, (45) [2021-12-28 03:16:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2021-12-28 03:16:36,258 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 102 [2021-12-28 03:16:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:36,258 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2021-12-28 03:16:36,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 03:16:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2021-12-28 03:16:36,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-28 03:16:36,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:36,260 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:36,284 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 03:16:36,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:36,482 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:36,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash -49851437, now seen corresponding path program 1 times [2021-12-28 03:16:36,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:36,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707614973] [2021-12-28 03:16:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:36,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:16:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:16:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:16:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:16:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:16:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:16:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-28 03:16:36,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:36,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707614973] [2021-12-28 03:16:36,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707614973] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:36,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32132603] [2021-12-28 03:16:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:36,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:36,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:36,805 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 03:16:36,806 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 03:16:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:37,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:16:37,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 03:16:37,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:37,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32132603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:37,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:37,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-28 03:16:37,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879822004] [2021-12-28 03:16:37,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:37,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:16:37,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:16:37,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:16:37,440 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-28 03:16:37,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:37,642 INFO L93 Difference]: Finished difference Result 212 states and 290 transitions. [2021-12-28 03:16:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:16:37,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 104 [2021-12-28 03:16:37,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:37,644 INFO L225 Difference]: With dead ends: 212 [2021-12-28 03:16:37,644 INFO L226 Difference]: Without dead ends: 131 [2021-12-28 03:16:37,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:16:37,645 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 206 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:37,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 553 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:16:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-28 03:16:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-12-28 03:16:37,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2021-12-28 03:16:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 177 transitions. [2021-12-28 03:16:37,662 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 177 transitions. Word has length 104 [2021-12-28 03:16:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:37,662 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 177 transitions. [2021-12-28 03:16:37,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-28 03:16:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 177 transitions. [2021-12-28 03:16:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 03:16:37,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:37,664 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:37,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:37,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-28 03:16:37,865 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash 160212765, now seen corresponding path program 2 times [2021-12-28 03:16:37,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:37,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453310612] [2021-12-28 03:16:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:37,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:16:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:16:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:16:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:16:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:16:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:16:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-28 03:16:38,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:38,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453310612] [2021-12-28 03:16:38,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453310612] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:38,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131429432] [2021-12-28 03:16:38,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:16:38,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:38,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:38,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:38,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:16:38,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 03:16:38,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:16:38,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 03:16:38,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-28 03:16:38,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:38,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131429432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:38,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:38,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-12-28 03:16:38,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280705850] [2021-12-28 03:16:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:38,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:16:38,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:16:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:16:38,746 INFO L87 Difference]: Start difference. First operand 131 states and 177 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-28 03:16:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:38,811 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2021-12-28 03:16:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:16:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2021-12-28 03:16:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:38,813 INFO L225 Difference]: With dead ends: 143 [2021-12-28 03:16:38,814 INFO L226 Difference]: Without dead ends: 141 [2021-12-28 03:16:38,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:16:38,815 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 16 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:38,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1179 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:16:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-28 03:16:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-12-28 03:16:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 87 states have internal predecessors, (100), 41 states have call successors, (41), 12 states have call predecessors, (41), 14 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2021-12-28 03:16:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2021-12-28 03:16:38,826 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 108 [2021-12-28 03:16:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:38,827 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2021-12-28 03:16:38,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-28 03:16:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2021-12-28 03:16:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-28 03:16:38,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:38,828 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 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] [2021-12-28 03:16:38,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:39,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:39,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:39,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1574940187, now seen corresponding path program 1 times [2021-12-28 03:16:39,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:39,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420513227] [2021-12-28 03:16:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:39,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:16:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:16:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:16:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:16:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:16:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:16:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-28 03:16:39,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:39,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420513227] [2021-12-28 03:16:39,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420513227] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:39,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440109167] [2021-12-28 03:16:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:39,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:39,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:39,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:39,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:16:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:39,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:16:39,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-28 03:16:40,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:40,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440109167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:40,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:40,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-28 03:16:40,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601454406] [2021-12-28 03:16:40,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:40,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:16:40,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:16:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:16:40,013 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-28 03:16:40,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:40,174 INFO L93 Difference]: Finished difference Result 245 states and 337 transitions. [2021-12-28 03:16:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:16:40,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 112 [2021-12-28 03:16:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:40,176 INFO L225 Difference]: With dead ends: 245 [2021-12-28 03:16:40,176 INFO L226 Difference]: Without dead ends: 137 [2021-12-28 03:16:40,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:16:40,178 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 205 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:40,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 556 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:16:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-28 03:16:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-28 03:16:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-12-28 03:16:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 186 transitions. [2021-12-28 03:16:40,187 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 186 transitions. Word has length 112 [2021-12-28 03:16:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:40,188 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 186 transitions. [2021-12-28 03:16:40,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-28 03:16:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 186 transitions. [2021-12-28 03:16:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-28 03:16:40,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:40,189 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:40,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:40,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:40,403 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash 660367434, now seen corresponding path program 1 times [2021-12-28 03:16:40,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:40,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809690462] [2021-12-28 03:16:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:40,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:16:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:16:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:16:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:16:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:16:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:40,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:16:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-28 03:16:41,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:41,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809690462] [2021-12-28 03:16:41,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809690462] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:41,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88930765] [2021-12-28 03:16:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:41,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:41,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:41,006 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:41,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:16:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:41,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 129 conjunts are in the unsatisfiable core [2021-12-28 03:16:41,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:42,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:16:42,021 INFO L353 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-28 03:16:42,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-12-28 03:16:43,089 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:16:43,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2021-12-28 03:16:43,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-28 03:16:43,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-28 03:16:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 03:16:43,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:16:52,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2021-12-28 03:16:52,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-12-28 03:16:53,864 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_401 Int) (|ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| Int)) (let ((.cse1 (store (store (select |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|)) (+ 8 |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset|) v_ArrVal_401))) (let ((.cse0 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| .cse1) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|) 18446744073709551616))) (or (and (not (= .cse0 0)) (<= 0 |c_#StackHeapBarrier|)) (= .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset|) 18446744073709551616)))))) is different from false [2021-12-28 03:16:53,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88930765] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:53,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:16:53,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24] total 34 [2021-12-28 03:16:53,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166095268] [2021-12-28 03:16:53,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:16:53,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-28 03:16:53,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-28 03:16:53,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2270, Unknown=2, NotChecked=96, Total=2550 [2021-12-28 03:16:53,890 INFO L87 Difference]: Start difference. First operand 137 states and 186 transitions. Second operand has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 15 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) [2021-12-28 03:16:59,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:59,126 INFO L93 Difference]: Finished difference Result 546 states and 783 transitions. [2021-12-28 03:16:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-28 03:16:59,127 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 15 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) Word has length 114 [2021-12-28 03:16:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:59,166 INFO L225 Difference]: With dead ends: 546 [2021-12-28 03:16:59,167 INFO L226 Difference]: Without dead ends: 472 [2021-12-28 03:16:59,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 183 SyntacticMatches, 11 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=907, Invalid=8995, Unknown=2, NotChecked=196, Total=10100 [2021-12-28 03:16:59,171 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 500 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 4419 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 5524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 4419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:59,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 1498 Invalid, 5524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 4419 Invalid, 0 Unknown, 676 Unchecked, 3.2s Time] [2021-12-28 03:16:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-28 03:16:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 298. [2021-12-28 03:16:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 185 states have (on average 1.1837837837837837) internal successors, (219), 192 states have internal predecessors, (219), 81 states have call successors, (81), 25 states have call predecessors, (81), 31 states have return successors, (103), 80 states have call predecessors, (103), 79 states have call successors, (103) [2021-12-28 03:16:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 403 transitions. [2021-12-28 03:16:59,220 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 403 transitions. Word has length 114 [2021-12-28 03:16:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:59,220 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 403 transitions. [2021-12-28 03:16:59,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 15 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) [2021-12-28 03:16:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 403 transitions. [2021-12-28 03:16:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 03:16:59,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:59,223 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:59,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-28 03:16:59,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:59,439 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash 224274962, now seen corresponding path program 2 times [2021-12-28 03:16:59,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:59,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104150308] [2021-12-28 03:16:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:59,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:16:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:16:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:16:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:16:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:16:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:16:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:16:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:16:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:16:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:16:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:16:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-28 03:16:59,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:59,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104150308] [2021-12-28 03:16:59,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104150308] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:59,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652837839] [2021-12-28 03:16:59,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:16:59,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:59,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:59,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:17:00,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:17:00,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:00,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-28 03:17:00,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:00,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-28 03:17:00,589 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-28 03:17:00,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-12-28 03:17:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 60 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-28 03:17:06,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:07,816 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_478 Int) (|ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base|) |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|)) (+ |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| 8) v_ArrVal_478)) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|) 18446744073709551616) 0)) is different from false [2021-12-28 03:17:07,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652837839] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:07,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:17:07,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2021-12-28 03:17:07,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785890027] [2021-12-28 03:17:07,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:07,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-28 03:17:07,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:07,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-28 03:17:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=886, Unknown=1, NotChecked=60, Total=1056 [2021-12-28 03:17:07,825 INFO L87 Difference]: Start difference. First operand 298 states and 403 transitions. Second operand has 26 states, 24 states have (on average 4.25) internal successors, (102), 22 states have internal predecessors, (102), 9 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2021-12-28 03:17:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:19,570 INFO L93 Difference]: Finished difference Result 587 states and 783 transitions. [2021-12-28 03:17:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-28 03:17:19,570 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.25) internal successors, (102), 22 states have internal predecessors, (102), 9 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 118 [2021-12-28 03:17:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:19,572 INFO L225 Difference]: With dead ends: 587 [2021-12-28 03:17:19,572 INFO L226 Difference]: Without dead ends: 369 [2021-12-28 03:17:19,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 201 SyntacticMatches, 14 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=559, Invalid=3854, Unknown=13, NotChecked=130, Total=4556 [2021-12-28 03:17:19,574 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 187 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 896 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:19,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1400 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1198 Invalid, 0 Unknown, 896 Unchecked, 0.7s Time] [2021-12-28 03:17:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-28 03:17:19,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 346. [2021-12-28 03:17:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 221 states have (on average 1.167420814479638) internal successors, (258), 230 states have internal predecessors, (258), 86 states have call successors, (86), 30 states have call predecessors, (86), 38 states have return successors, (118), 85 states have call predecessors, (118), 84 states have call successors, (118) [2021-12-28 03:17:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 462 transitions. [2021-12-28 03:17:19,610 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 462 transitions. Word has length 118 [2021-12-28 03:17:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:19,611 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 462 transitions. [2021-12-28 03:17:19,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.25) internal successors, (102), 22 states have internal predecessors, (102), 9 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2021-12-28 03:17:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 462 transitions. [2021-12-28 03:17:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-28 03:17:19,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:19,614 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:19,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:19,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:19,831 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash -422342713, now seen corresponding path program 1 times [2021-12-28 03:17:19,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:19,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919313763] [2021-12-28 03:17:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:19,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:17:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:17:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:17:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:17:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:17:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:17:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:17:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:17:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:17:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 03:17:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:17:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-28 03:17:20,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:20,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919313763] [2021-12-28 03:17:20,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919313763] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:20,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836511078] [2021-12-28 03:17:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:20,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:20,359 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:17:20,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:17:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:17:20,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-28 03:17:21,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:21,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836511078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:21,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:21,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2021-12-28 03:17:21,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503279023] [2021-12-28 03:17:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:21,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:17:21,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:17:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:17:21,005 INFO L87 Difference]: Start difference. First operand 346 states and 462 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-28 03:17:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:21,174 INFO L93 Difference]: Finished difference Result 582 states and 766 transitions. [2021-12-28 03:17:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:17:21,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 125 [2021-12-28 03:17:21,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:21,177 INFO L225 Difference]: With dead ends: 582 [2021-12-28 03:17:21,177 INFO L226 Difference]: Without dead ends: 350 [2021-12-28 03:17:21,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:17:21,178 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 12 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:21,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1273 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-28 03:17:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-28 03:17:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 224 states have (on average 1.1607142857142858) internal successors, (260), 234 states have internal predecessors, (260), 86 states have call successors, (86), 30 states have call predecessors, (86), 39 states have return successors, (120), 85 states have call predecessors, (120), 84 states have call successors, (120) [2021-12-28 03:17:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 466 transitions. [2021-12-28 03:17:21,214 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 466 transitions. Word has length 125 [2021-12-28 03:17:21,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:21,214 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 466 transitions. [2021-12-28 03:17:21,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-28 03:17:21,214 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 466 transitions. [2021-12-28 03:17:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 03:17:21,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:21,216 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:21,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:21,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:21,436 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1861715124, now seen corresponding path program 1 times [2021-12-28 03:17:21,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:21,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721011255] [2021-12-28 03:17:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:21,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:17:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:17:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:17:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:17:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:17:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:17:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:17:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:17:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:17:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:17:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:17:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-28 03:17:21,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:21,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721011255] [2021-12-28 03:17:21,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721011255] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:21,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141837971] [2021-12-28 03:17:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:21,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:21,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:17:21,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:17:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:17:22,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-28 03:17:22,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:22,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141837971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:22,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:22,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-28 03:17:22,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19051255] [2021-12-28 03:17:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:22,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:17:22,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:17:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:17:22,395 INFO L87 Difference]: Start difference. First operand 350 states and 466 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 03:17:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:22,525 INFO L93 Difference]: Finished difference Result 622 states and 854 transitions. [2021-12-28 03:17:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:17:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2021-12-28 03:17:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:22,527 INFO L225 Difference]: With dead ends: 622 [2021-12-28 03:17:22,527 INFO L226 Difference]: Without dead ends: 350 [2021-12-28 03:17:22,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:17:22,528 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 17 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:22,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 597 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2021-12-28 03:17:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-28 03:17:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-28 03:17:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 224 states have (on average 1.1473214285714286) internal successors, (257), 234 states have internal predecessors, (257), 86 states have call successors, (86), 30 states have call predecessors, (86), 39 states have return successors, (120), 85 states have call predecessors, (120), 84 states have call successors, (120) [2021-12-28 03:17:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 463 transitions. [2021-12-28 03:17:22,544 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 463 transitions. Word has length 127 [2021-12-28 03:17:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:22,544 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 463 transitions. [2021-12-28 03:17:22,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 03:17:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 463 transitions. [2021-12-28 03:17:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 03:17:22,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:22,546 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:22,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-28 03:17:22,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-28 03:17:22,766 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:22,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash -968228786, now seen corresponding path program 1 times [2021-12-28 03:17:22,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:22,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148436809] [2021-12-28 03:17:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:22,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:17:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:17:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:17:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:17:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:17:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:17:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:17:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:17:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:17:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:17:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:17:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-28 03:17:23,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:23,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148436809] [2021-12-28 03:17:23,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148436809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:23,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62175209] [2021-12-28 03:17:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:23,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:23,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:23,100 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:17:23,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:17:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-28 03:17:23,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:23,740 INFO L353 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-12-28 03:17:23,740 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 45 [2021-12-28 03:17:23,820 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-28 03:17:23,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 24 [2021-12-28 03:17:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 76 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-28 03:17:23,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:24,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62175209] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:24,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:17:24,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 20 [2021-12-28 03:17:24,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017906999] [2021-12-28 03:17:24,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:24,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-28 03:17:24,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:24,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-28 03:17:24,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2021-12-28 03:17:24,270 INFO L87 Difference]: Start difference. First operand 350 states and 463 transitions. Second operand has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 18 states have internal predecessors, (108), 8 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2021-12-28 03:17:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:25,761 INFO L93 Difference]: Finished difference Result 620 states and 848 transitions. [2021-12-28 03:17:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 03:17:25,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 18 states have internal predecessors, (108), 8 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) Word has length 127 [2021-12-28 03:17:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:25,764 INFO L225 Difference]: With dead ends: 620 [2021-12-28 03:17:25,764 INFO L226 Difference]: Without dead ends: 426 [2021-12-28 03:17:25,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 231 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2021-12-28 03:17:25,765 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 133 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:25,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 837 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1859 Invalid, 0 Unknown, 409 Unchecked, 1.1s Time] [2021-12-28 03:17:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-12-28 03:17:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 360. [2021-12-28 03:17:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 232 states have (on average 1.1422413793103448) internal successors, (265), 240 states have internal predecessors, (265), 88 states have call successors, (88), 32 states have call predecessors, (88), 39 states have return successors, (120), 87 states have call predecessors, (120), 86 states have call successors, (120) [2021-12-28 03:17:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 473 transitions. [2021-12-28 03:17:25,818 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 473 transitions. Word has length 127 [2021-12-28 03:17:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:25,818 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 473 transitions. [2021-12-28 03:17:25,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 18 states have internal predecessors, (108), 8 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2021-12-28 03:17:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 473 transitions. [2021-12-28 03:17:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 03:17:25,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:25,820 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-12-28 03:17:25,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:26,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:17:26,039 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2040741793, now seen corresponding path program 1 times [2021-12-28 03:17:26,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:26,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356393567] [2021-12-28 03:17:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:26,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:17:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:17:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:17:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:17:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:17:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:17:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:17:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-28 03:17:26,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:26,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356393567] [2021-12-28 03:17:26,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356393567] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:26,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999020732] [2021-12-28 03:17:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:26,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:26,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:26,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:17:26,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:17:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:17:26,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-28 03:17:26,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:26,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999020732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:26,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:26,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-28 03:17:26,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476211068] [2021-12-28 03:17:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:26,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:17:26,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:17:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:17:26,862 INFO L87 Difference]: Start difference. First operand 360 states and 473 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 03:17:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:26,972 INFO L93 Difference]: Finished difference Result 513 states and 683 transitions. [2021-12-28 03:17:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:17:26,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2021-12-28 03:17:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:26,987 INFO L225 Difference]: With dead ends: 513 [2021-12-28 03:17:26,987 INFO L226 Difference]: Without dead ends: 360 [2021-12-28 03:17:26,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:17:26,989 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 11 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:26,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1258 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-28 03:17:27,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-12-28 03:17:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 232 states have (on average 1.1422413793103448) internal successors, (265), 240 states have internal predecessors, (265), 88 states have call successors, (88), 32 states have call predecessors, (88), 39 states have return successors, (119), 87 states have call predecessors, (119), 86 states have call successors, (119) [2021-12-28 03:17:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 472 transitions. [2021-12-28 03:17:27,023 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 472 transitions. Word has length 124 [2021-12-28 03:17:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:27,023 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 472 transitions. [2021-12-28 03:17:27,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 03:17:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 472 transitions. [2021-12-28 03:17:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 03:17:27,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:27,025 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:27,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:27,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-28 03:17:27,240 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash -153440338, now seen corresponding path program 2 times [2021-12-28 03:17:27,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:27,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448395526] [2021-12-28 03:17:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:27,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:17:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:17:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:17:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:17:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:17:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:17:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:17:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:17:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:17:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:17:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:17:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-28 03:17:27,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:27,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448395526] [2021-12-28 03:17:27,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448395526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287345794] [2021-12-28 03:17:27,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:17:27,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:27,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:27,713 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:17:27,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:17:28,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:17:28,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:28,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-28 03:17:28,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:28,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-28 03:17:28,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-12-28 03:17:28,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-28 03:17:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-28 03:17:28,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:28,935 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1038 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| v_ArrVal_1038) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|))) (<= .cse0 (* (div .cse0 18446744073709551616) 18446744073709551616)))) is different from false [2021-12-28 03:17:28,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287345794] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:28,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:17:28,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 19 [2021-12-28 03:17:28,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661877579] [2021-12-28 03:17:28,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:28,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:17:28,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:28,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:17:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=325, Unknown=1, NotChecked=36, Total=420 [2021-12-28 03:17:28,942 INFO L87 Difference]: Start difference. First operand 360 states and 472 transitions. Second operand has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 17 states have internal predecessors, (95), 9 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (34), 7 states have call predecessors, (34), 9 states have call successors, (34) [2021-12-28 03:17:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:30,131 INFO L93 Difference]: Finished difference Result 543 states and 719 transitions. [2021-12-28 03:17:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:17:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 17 states have internal predecessors, (95), 9 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (34), 7 states have call predecessors, (34), 9 states have call successors, (34) Word has length 127 [2021-12-28 03:17:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:30,133 INFO L225 Difference]: With dead ends: 543 [2021-12-28 03:17:30,133 INFO L226 Difference]: Without dead ends: 379 [2021-12-28 03:17:30,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 235 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=686, Unknown=2, NotChecked=54, Total=870 [2021-12-28 03:17:30,134 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 165 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:30,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 713 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1472 Invalid, 0 Unknown, 193 Unchecked, 1.0s Time] [2021-12-28 03:17:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-12-28 03:17:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 363. [2021-12-28 03:17:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 235 states have (on average 1.1404255319148937) internal successors, (268), 242 states have internal predecessors, (268), 88 states have call successors, (88), 33 states have call predecessors, (88), 39 states have return successors, (116), 87 states have call predecessors, (116), 86 states have call successors, (116) [2021-12-28 03:17:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 472 transitions. [2021-12-28 03:17:30,154 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 472 transitions. Word has length 127 [2021-12-28 03:17:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:30,154 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 472 transitions. [2021-12-28 03:17:30,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 17 states have internal predecessors, (95), 9 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (34), 7 states have call predecessors, (34), 9 states have call successors, (34) [2021-12-28 03:17:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 472 transitions. [2021-12-28 03:17:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 03:17:30,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:30,156 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:30,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-28 03:17:30,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-28 03:17:30,371 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:30,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:30,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2105556007, now seen corresponding path program 2 times [2021-12-28 03:17:30,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:30,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677933015] [2021-12-28 03:17:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:30,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:17:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:17:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:17:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:17:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:17:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 03:17:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:17:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:17:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:17:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:17:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:17:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-28 03:17:30,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:30,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677933015] [2021-12-28 03:17:30,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677933015] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:30,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655313671] [2021-12-28 03:17:30,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:17:30,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:30,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:30,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:17:30,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:17:31,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:17:31,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:31,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-28 03:17:31,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:31,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-28 03:17:31,951 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-28 03:17:31,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-12-28 03:17:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 60 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-28 03:17:35,164 INFO L328 TraceCheckSpWp]: Computing backward predicates...