./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_priority_queue_size_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 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:31:38,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:31:38,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:31:38,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:31:38,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:31:38,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:31:38,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:31:38,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:31:38,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:31:38,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:31:38,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:31:38,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:31:38,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:31:38,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:31:38,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:31:38,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:31:38,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:31:38,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:31:38,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:31:38,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:31:38,463 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:31:38,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:31:38,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:31:38,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:31:38,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:31:38,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:31:38,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:31:38,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:31:38,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:31:38,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:31:38,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:31:38,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:31:38,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:31:38,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:31:38,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:31:38,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:31:38,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:31:38,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:31:38,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:31:38,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:31:38,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:31:38,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:31:38,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:31:38,513 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:31:38,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:31:38,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:31:38,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:31:38,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:31:38,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:31:38,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:31:38,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:31:38,516 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:31:38,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:31:38,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:31:38,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:31:38,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:31:38,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:31:38,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:31:38,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:31:38,519 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:31:38,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:31:38,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:31:38,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:31:38,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:31:38,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:31:38,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:31:38,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:31:38,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:31:38,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:31:38,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:31:38,521 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:31:38,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:31:38,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:31:38,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 [2022-07-22 22:31:38,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:31:38,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:31:38,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:31:38,746 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:31:38,747 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:31:38,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2022-07-22 22:31:38,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a56117ab9/15f1f35844c14d5f89ba3b8aed521ca3/FLAG675d96f1b [2022-07-22 22:31:39,475 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:31:39,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2022-07-22 22:31:39,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a56117ab9/15f1f35844c14d5f89ba3b8aed521ca3/FLAG675d96f1b [2022-07-22 22:31:39,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a56117ab9/15f1f35844c14d5f89ba3b8aed521ca3 [2022-07-22 22:31:39,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:31:39,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:31:39,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:31:39,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:31:39,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:31:39,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:31:39" (1/1) ... [2022-07-22 22:31:39,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe6c1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:39, skipping insertion in model container [2022-07-22 22:31:39,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:31:39" (1/1) ... [2022-07-22 22:31:39,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:31:39,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:31:40,098 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_priority_queue_size_harness.i[4497,4510] [2022-07-22 22:31:40,104 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_priority_queue_size_harness.i[4557,4570] [2022-07-22 22:31:40,622 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:31:40,676 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,677 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,677 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,677 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,678 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,687 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,688 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,689 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,690 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:40,920 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:31:40,921 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:31:40,922 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:31:40,923 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:31:40,924 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:31:40,924 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:31:40,925 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:31:40,925 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:31:40,926 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:31:40,926 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:31:41,048 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,049 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:31:41,123 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:31:41,134 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_priority_queue_size_harness.i[4497,4510] [2022-07-22 22:31:41,135 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_priority_queue_size_harness.i[4557,4570] [2022-07-22 22:31:41,180 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:31:41,200 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,201 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,203 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,204 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,204 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,215 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,218 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,219 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,219 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,271 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:31:41,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:31:41,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:31:41,273 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:31:41,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:31:41,276 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:31:41,276 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:31:41,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:31:41,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:31:41,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:31:41,339 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,339 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:31:41,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:31:41,624 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:31:41,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41 WrapperNode [2022-07-22 22:31:41,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:31:41,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:31:41,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:31:41,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:31:41,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,756 INFO L137 Inliner]: procedures = 689, calls = 1531, calls flagged for inlining = 55, calls inlined = 10, statements flattened = 667 [2022-07-22 22:31:41,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:31:41,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:31:41,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:31:41,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:31:41,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:31:41,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:31:41,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:31:41,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:31:41,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (1/1) ... [2022-07-22 22:31:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:31:41,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:41,913 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) [2022-07-22 22:31:41,916 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 [2022-07-22 22:31:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-22 22:31:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-22 22:31:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:31:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-22 22:31:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-22 22:31:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-22 22:31:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-22 22:31:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:31:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:31:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:31:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:31:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:31:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:31:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:31:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:31:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:31:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-22 22:31:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-22 22:31:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:31:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:31:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:31:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:31:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:31:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:31:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:31:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:31:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:31:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-22 22:31:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-22 22:31:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-22 22:31:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-22 22:31:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:31:41,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:31:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:31:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:31:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:31:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:31:41,956 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:31:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:31:41,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:31:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:31:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-07-22 22:31:41,957 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-07-22 22:31:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:31:41,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:31:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:31:42,168 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:31:42,170 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:31:42,924 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:31:42,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:31:42,934 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 22:31:42,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:31:42 BoogieIcfgContainer [2022-07-22 22:31:42,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:31:42,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:31:42,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:31:42,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:31:42,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:31:39" (1/3) ... [2022-07-22 22:31:42,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ba9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:31:42, skipping insertion in model container [2022-07-22 22:31:42,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:41" (2/3) ... [2022-07-22 22:31:42,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ba9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:31:42, skipping insertion in model container [2022-07-22 22:31:42,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:31:42" (3/3) ... [2022-07-22 22:31:42,946 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness.i [2022-07-22 22:31:42,960 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:31:42,960 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:31:43,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:31:43,044 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@318e58a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f66fbbf [2022-07-22 22:31:43,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:31:43,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-22 22:31:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 22:31:43,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:43,066 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:43,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1923135121, now seen corresponding path program 1 times [2022-07-22 22:31:43,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:43,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43589906] [2022-07-22 22:31:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:31:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:31:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:31:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:31:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:31:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:31:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:31:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:31:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:31:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:31:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:31:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:31:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:31:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:31:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 22:31:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 22:31:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:31:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 22:31:43,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:43,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43589906] [2022-07-22 22:31:43,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43589906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:43,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:43,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:31:43,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992237969] [2022-07-22 22:31:43,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:43,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:31:43,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:43,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:31:43,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:43,992 INFO L87 Difference]: Start difference. First operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:31:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:44,560 INFO L93 Difference]: Finished difference Result 399 states and 564 transitions. [2022-07-22 22:31:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:31:44,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2022-07-22 22:31:44,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:44,589 INFO L225 Difference]: With dead ends: 399 [2022-07-22 22:31:44,590 INFO L226 Difference]: Without dead ends: 234 [2022-07-22 22:31:44,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:44,597 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 131 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:44,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 356 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:31:44,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-22 22:31:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2022-07-22 22:31:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 22:31:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2022-07-22 22:31:44,671 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 107 [2022-07-22 22:31:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:44,671 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2022-07-22 22:31:44,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:31:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2022-07-22 22:31:44,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 22:31:44,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:44,675 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:44,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:31:44,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:44,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:44,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1898390481, now seen corresponding path program 1 times [2022-07-22 22:31:44,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:44,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661794375] [2022-07-22 22:31:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:44,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:31:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:31:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:31:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:31:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:31:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:31:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:31:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:31:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:31:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:31:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:31:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:45,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:31:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:31:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:31:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 22:31:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 22:31:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:31:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 22:31:45,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:45,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661794375] [2022-07-22 22:31:45,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661794375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:45,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:45,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:31:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673473243] [2022-07-22 22:31:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:31:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:45,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:31:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:31:45,106 INFO L87 Difference]: Start difference. First operand 166 states and 209 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:31:45,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:45,831 INFO L93 Difference]: Finished difference Result 358 states and 477 transitions. [2022-07-22 22:31:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:31:45,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 107 [2022-07-22 22:31:45,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:45,834 INFO L225 Difference]: With dead ends: 358 [2022-07-22 22:31:45,835 INFO L226 Difference]: Without dead ends: 234 [2022-07-22 22:31:45,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:31:45,837 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 288 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:45,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 506 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:31:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-22 22:31:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2022-07-22 22:31:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.201834862385321) internal successors, (131), 110 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 22:31:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2022-07-22 22:31:45,862 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 208 transitions. Word has length 107 [2022-07-22 22:31:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:45,863 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 208 transitions. [2022-07-22 22:31:45,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:31:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 208 transitions. [2022-07-22 22:31:45,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 22:31:45,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:45,875 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:45,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 22:31:45,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash 413511437, now seen corresponding path program 1 times [2022-07-22 22:31:45,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:45,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672358191] [2022-07-22 22:31:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:45,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:31:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:31:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:31:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:31:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:31:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:31:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:31:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:31:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:31:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:31:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:31:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:31:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:31:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:31:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:31:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:31:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:31:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:31:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 22:31:46,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:46,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672358191] [2022-07-22 22:31:46,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672358191] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:31:46,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447952946] [2022-07-22 22:31:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:46,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:46,389 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) [2022-07-22 22:31:46,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:31:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:46,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:31:46,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 22:31:47,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:47,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447952946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:47,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:31:47,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-22 22:31:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598428005] [2022-07-22 22:31:47,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:47,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:31:47,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:47,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:31:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:31:47,032 INFO L87 Difference]: Start difference. First operand 166 states and 208 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 22:31:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:47,178 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2022-07-22 22:31:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:31:47,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 115 [2022-07-22 22:31:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:47,183 INFO L225 Difference]: With dead ends: 309 [2022-07-22 22:31:47,183 INFO L226 Difference]: Without dead ends: 168 [2022-07-22 22:31:47,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:31:47,192 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:47,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1056 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:31:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-22 22:31:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-22 22:31:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.2) internal successors, (132), 112 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-22 22:31:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 212 transitions. [2022-07-22 22:31:47,222 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 212 transitions. Word has length 115 [2022-07-22 22:31:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:47,224 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 212 transitions. [2022-07-22 22:31:47,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 22:31:47,224 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 212 transitions. [2022-07-22 22:31:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 22:31:47,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:47,227 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:47,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 22:31:47,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:47,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash -445935835, now seen corresponding path program 1 times [2022-07-22 22:31:47,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:47,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041604668] [2022-07-22 22:31:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:47,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:47,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263910920] [2022-07-22 22:31:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:47,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:47,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:47,524 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) [2022-07-22 22:31:47,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:31:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:48,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:31:48,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 22:31:48,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:48,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:48,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041604668] [2022-07-22 22:31:48,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:48,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263910920] [2022-07-22 22:31:48,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263910920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:48,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:48,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:31:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50186407] [2022-07-22 22:31:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:48,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:31:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:31:48,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:31:48,031 INFO L87 Difference]: Start difference. First operand 168 states and 212 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 22:31:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:48,059 INFO L93 Difference]: Finished difference Result 297 states and 384 transitions. [2022-07-22 22:31:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:31:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2022-07-22 22:31:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:48,061 INFO L225 Difference]: With dead ends: 297 [2022-07-22 22:31:48,062 INFO L226 Difference]: Without dead ends: 173 [2022-07-22 22:31:48,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:48,063 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:48,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:31:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-22 22:31:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2022-07-22 22:31:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 114 states have internal predecessors, (134), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-22 22:31:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2022-07-22 22:31:48,078 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 130 [2022-07-22 22:31:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:48,078 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2022-07-22 22:31:48,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 22:31:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2022-07-22 22:31:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 22:31:48,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:48,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:48,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:48,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-22 22:31:48,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash -879664921, now seen corresponding path program 1 times [2022-07-22 22:31:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:48,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996889765] [2022-07-22 22:31:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:48,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:48,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:48,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746045555] [2022-07-22 22:31:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:48,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:48,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:48,378 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) [2022-07-22 22:31:48,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:31:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:48,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:31:48,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 22:31:48,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:48,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:48,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996889765] [2022-07-22 22:31:48,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:48,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746045555] [2022-07-22 22:31:48,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746045555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:48,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:48,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:31:48,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609308211] [2022-07-22 22:31:48,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:48,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:31:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:31:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:31:48,892 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-22 22:31:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:49,086 INFO L93 Difference]: Finished difference Result 299 states and 378 transitions. [2022-07-22 22:31:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:31:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2022-07-22 22:31:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:49,098 INFO L225 Difference]: With dead ends: 299 [2022-07-22 22:31:49,098 INFO L226 Difference]: Without dead ends: 170 [2022-07-22 22:31:49,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:31:49,099 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 243 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:49,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 808 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:31:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-22 22:31:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-07-22 22:31:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-22 22:31:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2022-07-22 22:31:49,117 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 130 [2022-07-22 22:31:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:49,117 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2022-07-22 22:31:49,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-22 22:31:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2022-07-22 22:31:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 22:31:49,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:49,120 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:49,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:49,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:49,344 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash 391202648, now seen corresponding path program 1 times [2022-07-22 22:31:49,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:49,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482881359] [2022-07-22 22:31:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:49,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:49,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959009857] [2022-07-22 22:31:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:49,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:49,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:49,420 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) [2022-07-22 22:31:49,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:31:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:49,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:31:49,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:31:49,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:49,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:49,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482881359] [2022-07-22 22:31:49,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:49,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959009857] [2022-07-22 22:31:49,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959009857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:49,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:49,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:31:49,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652181322] [2022-07-22 22:31:49,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:49,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:31:49,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:31:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:31:49,935 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-22 22:31:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:50,114 INFO L93 Difference]: Finished difference Result 312 states and 395 transitions. [2022-07-22 22:31:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:31:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 146 [2022-07-22 22:31:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:50,117 INFO L225 Difference]: With dead ends: 312 [2022-07-22 22:31:50,117 INFO L226 Difference]: Without dead ends: 170 [2022-07-22 22:31:50,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:31:50,118 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 104 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:50,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1168 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:31:50,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-22 22:31:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-07-22 22:31:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-07-22 22:31:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2022-07-22 22:31:50,128 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 146 [2022-07-22 22:31:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:50,129 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2022-07-22 22:31:50,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-22 22:31:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2022-07-22 22:31:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 22:31:50,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:50,131 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 22:31:50,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:50,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:50,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:50,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1071073244, now seen corresponding path program 2 times [2022-07-22 22:31:50,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:50,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814185304] [2022-07-22 22:31:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:50,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:50,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:50,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682036505] [2022-07-22 22:31:50,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:31:50,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:50,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:50,420 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) [2022-07-22 22:31:50,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:31:51,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:31:51,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:31:51,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:31:51,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-22 22:31:51,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:51,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:51,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814185304] [2022-07-22 22:31:51,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:51,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682036505] [2022-07-22 22:31:51,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682036505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:51,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:51,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:31:51,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213204766] [2022-07-22 22:31:51,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:51,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:31:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:31:51,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:31:51,212 INFO L87 Difference]: Start difference. First operand 170 states and 212 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:31:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:51,445 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2022-07-22 22:31:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:31:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 161 [2022-07-22 22:31:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:51,447 INFO L225 Difference]: With dead ends: 277 [2022-07-22 22:31:51,447 INFO L226 Difference]: Without dead ends: 168 [2022-07-22 22:31:51,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:31:51,449 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 213 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:51,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1110 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:31:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-22 22:31:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-22 22:31:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 112 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 22:31:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2022-07-22 22:31:51,470 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 161 [2022-07-22 22:31:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:51,470 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2022-07-22 22:31:51,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:31:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2022-07-22 22:31:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 22:31:51,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:51,473 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:51,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:51,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:51,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash 153523288, now seen corresponding path program 1 times [2022-07-22 22:31:51,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:51,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664455862] [2022-07-22 22:31:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:51,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:51,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981936180] [2022-07-22 22:31:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:51,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:51,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:51,771 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) [2022-07-22 22:31:51,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:31:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:52,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:31:52,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 22:31:52,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:52,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:52,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664455862] [2022-07-22 22:31:52,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:52,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981936180] [2022-07-22 22:31:52,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981936180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:52,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:52,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:31:52,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332695466] [2022-07-22 22:31:52,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:52,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:31:52,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:31:52,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:31:52,414 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:52,642 INFO L93 Difference]: Finished difference Result 310 states and 389 transitions. [2022-07-22 22:31:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:31:52,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2022-07-22 22:31:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:52,644 INFO L225 Difference]: With dead ends: 310 [2022-07-22 22:31:52,644 INFO L226 Difference]: Without dead ends: 186 [2022-07-22 22:31:52,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:31:52,645 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 21 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:52,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 899 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:31:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-22 22:31:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2022-07-22 22:31:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 115 states have (on average 1.182608695652174) internal successors, (136), 116 states have internal predecessors, (136), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 22:31:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 213 transitions. [2022-07-22 22:31:52,656 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 213 transitions. Word has length 191 [2022-07-22 22:31:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:52,656 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 213 transitions. [2022-07-22 22:31:52,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 213 transitions. [2022-07-22 22:31:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 22:31:52,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:52,659 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:52,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:52,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:52,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:52,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1805051498, now seen corresponding path program 1 times [2022-07-22 22:31:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:52,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649682020] [2022-07-22 22:31:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:52,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:52,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519874106] [2022-07-22 22:31:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:52,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:52,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:52,966 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) [2022-07-22 22:31:52,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:31:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:53,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:31:53,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 22:31:53,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:53,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:53,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649682020] [2022-07-22 22:31:53,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:53,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519874106] [2022-07-22 22:31:53,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519874106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:53,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:53,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:31:53,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598728001] [2022-07-22 22:31:53,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:53,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:31:53,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:31:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:31:53,526 INFO L87 Difference]: Start difference. First operand 172 states and 213 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:53,570 INFO L93 Difference]: Finished difference Result 304 states and 379 transitions. [2022-07-22 22:31:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:31:53,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2022-07-22 22:31:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:53,572 INFO L225 Difference]: With dead ends: 304 [2022-07-22 22:31:53,572 INFO L226 Difference]: Without dead ends: 176 [2022-07-22 22:31:53,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:53,573 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:53,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:31:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-22 22:31:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2022-07-22 22:31:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 118 states have internal predecessors, (138), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 22:31:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 215 transitions. [2022-07-22 22:31:53,584 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 215 transitions. Word has length 191 [2022-07-22 22:31:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:53,585 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 215 transitions. [2022-07-22 22:31:53,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 215 transitions. [2022-07-22 22:31:53,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 22:31:53,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:53,588 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:53,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:53,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:53,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:53,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash 610784852, now seen corresponding path program 1 times [2022-07-22 22:31:53,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:53,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175129720] [2022-07-22 22:31:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:53,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:53,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:53,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616478155] [2022-07-22 22:31:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:53,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:53,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:53,876 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) [2022-07-22 22:31:53,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:31:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:54,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-22 22:31:54,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:54,614 INFO L390 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 11 treesize of output 5 [2022-07-22 22:31:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 22:31:54,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:54,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:54,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175129720] [2022-07-22 22:31:54,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:54,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616478155] [2022-07-22 22:31:54,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616478155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:54,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:54,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:31:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440795354] [2022-07-22 22:31:54,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:54,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:31:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:54,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:31:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:31:54,631 INFO L87 Difference]: Start difference. First operand 174 states and 215 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-22 22:31:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:54,966 INFO L93 Difference]: Finished difference Result 329 states and 415 transitions. [2022-07-22 22:31:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:31:54,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 191 [2022-07-22 22:31:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:54,969 INFO L225 Difference]: With dead ends: 329 [2022-07-22 22:31:54,969 INFO L226 Difference]: Without dead ends: 197 [2022-07-22 22:31:54,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:31:54,970 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 119 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:54,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1312 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:31:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-22 22:31:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2022-07-22 22:31:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.186046511627907) internal successors, (153), 130 states have internal predecessors, (153), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-22 22:31:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2022-07-22 22:31:54,981 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 191 [2022-07-22 22:31:54,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:54,982 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2022-07-22 22:31:54,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-22 22:31:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2022-07-22 22:31:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 22:31:54,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:54,984 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:55,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:55,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 22:31:55,199 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash -841170410, now seen corresponding path program 1 times [2022-07-22 22:31:55,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:55,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134733078] [2022-07-22 22:31:55,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:55,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:55,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819163694] [2022-07-22 22:31:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:55,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:55,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:55,265 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) [2022-07-22 22:31:55,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:31:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:55,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 22:31:55,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 22:31:55,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:55,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:55,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134733078] [2022-07-22 22:31:55,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:55,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819163694] [2022-07-22 22:31:55,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819163694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:55,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:55,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:31:55,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375659053] [2022-07-22 22:31:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:55,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:31:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:31:55,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:55,809 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:55,847 INFO L93 Difference]: Finished difference Result 346 states and 437 transitions. [2022-07-22 22:31:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:31:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2022-07-22 22:31:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:55,849 INFO L225 Difference]: With dead ends: 346 [2022-07-22 22:31:55,849 INFO L226 Difference]: Without dead ends: 203 [2022-07-22 22:31:55,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:31:55,851 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 9 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:55,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 826 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:31:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-22 22:31:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2022-07-22 22:31:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 139 states have (on average 1.1870503597122302) internal successors, (165), 140 states have internal predecessors, (165), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-22 22:31:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 246 transitions. [2022-07-22 22:31:55,864 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 246 transitions. Word has length 191 [2022-07-22 22:31:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:55,864 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 246 transitions. [2022-07-22 22:31:55,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 246 transitions. [2022-07-22 22:31:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 22:31:55,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:55,866 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:55,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:56,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:56,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2030586518, now seen corresponding path program 1 times [2022-07-22 22:31:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:56,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149078166] [2022-07-22 22:31:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:56,159 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:56,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024529792] [2022-07-22 22:31:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:56,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:56,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:56,162 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) [2022-07-22 22:31:56,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:31:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:56,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:31:56,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 22:31:56,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:56,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:56,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149078166] [2022-07-22 22:31:56,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:56,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024529792] [2022-07-22 22:31:56,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024529792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:56,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:56,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:31:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797661065] [2022-07-22 22:31:56,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:56,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:31:56,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:56,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:31:56,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:31:56,751 INFO L87 Difference]: Start difference. First operand 197 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:56,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:56,778 INFO L93 Difference]: Finished difference Result 346 states and 434 transitions. [2022-07-22 22:31:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:31:56,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2022-07-22 22:31:56,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:56,780 INFO L225 Difference]: With dead ends: 346 [2022-07-22 22:31:56,780 INFO L226 Difference]: Without dead ends: 193 [2022-07-22 22:31:56,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:56,782 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:56,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 606 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:31:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-22 22:31:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2022-07-22 22:31:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.16793893129771) internal successors, (153), 132 states have internal predecessors, (153), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-22 22:31:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2022-07-22 22:31:56,793 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 191 [2022-07-22 22:31:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:56,793 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2022-07-22 22:31:56,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:56,794 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2022-07-22 22:31:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 22:31:56,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:56,795 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:56,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:57,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 22:31:57,010 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash 955866556, now seen corresponding path program 1 times [2022-07-22 22:31:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:57,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635569822] [2022-07-22 22:31:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:57,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:57,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:57,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020048320] [2022-07-22 22:31:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:57,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:57,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:57,072 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) [2022-07-22 22:31:57,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:31:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:57,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:31:57,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 22:31:57,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:57,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635569822] [2022-07-22 22:31:57,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:57,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020048320] [2022-07-22 22:31:57,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020048320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:57,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:57,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:31:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799749780] [2022-07-22 22:31:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:57,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:31:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:31:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:57,650 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:57,807 INFO L93 Difference]: Finished difference Result 334 states and 421 transitions. [2022-07-22 22:31:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:31:57,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2022-07-22 22:31:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:57,809 INFO L225 Difference]: With dead ends: 334 [2022-07-22 22:31:57,809 INFO L226 Difference]: Without dead ends: 189 [2022-07-22 22:31:57,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:31:57,811 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:57,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 755 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:31:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-22 22:31:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-07-22 22:31:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 132 states have internal predecessors, (152), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-22 22:31:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 233 transitions. [2022-07-22 22:31:57,821 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 233 transitions. Word has length 193 [2022-07-22 22:31:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:57,821 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 233 transitions. [2022-07-22 22:31:57,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 22:31:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 233 transitions. [2022-07-22 22:31:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 22:31:57,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:57,823 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:57,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 22:31:58,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:58,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash -100864646, now seen corresponding path program 1 times [2022-07-22 22:31:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:58,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143082001] [2022-07-22 22:31:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:58,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:58,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:58,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855997711] [2022-07-22 22:31:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:58,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:58,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:58,122 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) [2022-07-22 22:31:58,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:31:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:58,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 103 conjunts are in the unsatisfiable core [2022-07-22 22:31:58,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:32:04,071 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-22 22:32:04,072 INFO L390 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 40 treesize of output 20 [2022-07-22 22:32:04,081 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-22 22:32:04,081 INFO L390 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 33 treesize of output 13 [2022-07-22 22:32:04,087 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-22 22:32:04,088 INFO L390 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 36 treesize of output 16 [2022-07-22 22:32:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 22:32:04,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:32:06,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:32:06,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143082001] [2022-07-22 22:32:06,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:32:06,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855997711] [2022-07-22 22:32:06,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855997711] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:32:06,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:32:06,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-22 22:32:06,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061349930] [2022-07-22 22:32:06,966 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:32:06,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:32:06,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:32:06,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:32:06,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=842, Unknown=1, NotChecked=0, Total=930 [2022-07-22 22:32:06,967 INFO L87 Difference]: Start difference. First operand 189 states and 233 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-07-22 22:32:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:32:15,199 INFO L93 Difference]: Finished difference Result 427 states and 543 transitions. [2022-07-22 22:32:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 22:32:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 193 [2022-07-22 22:32:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:32:15,202 INFO L225 Difference]: With dead ends: 427 [2022-07-22 22:32:15,202 INFO L226 Difference]: Without dead ends: 294 [2022-07-22 22:32:15,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=354, Invalid=3183, Unknown=3, NotChecked=0, Total=3540 [2022-07-22 22:32:15,204 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 332 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 3800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:32:15,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1460 Invalid, 3800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3391 Invalid, 0 Unknown, 247 Unchecked, 2.6s Time] [2022-07-22 22:32:15,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-22 22:32:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 214. [2022-07-22 22:32:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 152 states have internal predecessors, (172), 43 states have call successors, (43), 18 states have call predecessors, (43), 21 states have return successors, (51), 43 states have call predecessors, (51), 42 states have call successors, (51) [2022-07-22 22:32:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 266 transitions. [2022-07-22 22:32:15,220 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 266 transitions. Word has length 193 [2022-07-22 22:32:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:32:15,221 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 266 transitions. [2022-07-22 22:32:15,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-07-22 22:32:15,221 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 266 transitions. [2022-07-22 22:32:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 22:32:15,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:32:15,223 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:32:15,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:32:15,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 22:32:15,451 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:32:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:32:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -348469826, now seen corresponding path program 1 times [2022-07-22 22:32:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:32:15,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048620009] [2022-07-22 22:32:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:32:15,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:32:15,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:32:15,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611234873] [2022-07-22 22:32:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:32:15,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:32:15,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:32:15,515 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:32:15,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:32:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:32:16,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 3023 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-22 22:32:16,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:32:16,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:32:16,442 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:32:16,442 INFO L390 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 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-22 22:32:18,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:18,512 INFO L390 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 23 treesize of output 22 [2022-07-22 22:32:21,141 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2060 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2060) |c_#memory_int|)) is different from true [2022-07-22 22:32:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 140 proven. 20 refuted. 2 times theorem prover too weak. 52 trivial. 3 not checked. [2022-07-22 22:32:21,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:32:22,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:32:22,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048620009] [2022-07-22 22:32:22,386 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:32:22,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611234873] [2022-07-22 22:32:22,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611234873] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:32:22,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:32:22,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-07-22 22:32:22,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108234812] [2022-07-22 22:32:22,387 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:32:22,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-22 22:32:22,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:32:22,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-22 22:32:22,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=856, Unknown=38, NotChecked=60, Total=1056 [2022-07-22 22:32:22,388 INFO L87 Difference]: Start difference. First operand 214 states and 266 transitions. Second operand has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2022-07-22 22:32:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:32:23,596 INFO L93 Difference]: Finished difference Result 450 states and 565 transitions. [2022-07-22 22:32:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 22:32:23,597 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) Word has length 200 [2022-07-22 22:32:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:32:23,599 INFO L225 Difference]: With dead ends: 450 [2022-07-22 22:32:23,599 INFO L226 Difference]: Without dead ends: 283 [2022-07-22 22:32:23,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 247 SyntacticMatches, 10 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=149, Invalid=1366, Unknown=49, NotChecked=76, Total=1640 [2022-07-22 22:32:23,600 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 217 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1980 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:32:23,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1125 Invalid, 3086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 948 Invalid, 0 Unknown, 1980 Unchecked, 0.8s Time] [2022-07-22 22:32:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-22 22:32:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 265. [2022-07-22 22:32:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 189 states have (on average 1.1481481481481481) internal successors, (217), 195 states have internal predecessors, (217), 46 states have call successors, (46), 21 states have call predecessors, (46), 29 states have return successors, (72), 48 states have call predecessors, (72), 45 states have call successors, (72) [2022-07-22 22:32:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 335 transitions. [2022-07-22 22:32:23,621 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 335 transitions. Word has length 200 [2022-07-22 22:32:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:32:23,621 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 335 transitions. [2022-07-22 22:32:23,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2022-07-22 22:32:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 335 transitions. [2022-07-22 22:32:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-22 22:32:23,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:32:23,623 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:32:23,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:32:23,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 22:32:23,838 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:32:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:32:23,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2062409755, now seen corresponding path program 1 times [2022-07-22 22:32:23,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:32:23,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618813721] [2022-07-22 22:32:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:32:23,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:32:23,909 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:32:23,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738241344] [2022-07-22 22:32:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:32:23,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:32:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:32:23,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:32:23,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:32:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:32:24,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 3062 conjuncts, 184 conjunts are in the unsatisfiable core [2022-07-22 22:32:24,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:32:24,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:32:24,952 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:32:24,952 INFO L390 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 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-22 22:32:40,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-07-22 22:32:40,961 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-22 22:32:40,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2022-07-22 22:32:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2022-07-22 22:32:51,214 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 22:32:51,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 22:32:51,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:51,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2022-07-22 22:32:51,762 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2341 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2341) |c_#memory_int|)) is different from true [2022-07-22 22:32:54,098 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2342 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2342)) |c_#memory_int|)) is different from true [2022-07-22 22:33:07,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:07,640 INFO L356 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-07-22 22:33:07,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 1 [2022-07-22 22:33:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 22 refuted. 4 times theorem prover too weak. 54 trivial. 3 not checked. [2022-07-22 22:33:07,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:33:09,486 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_9| Int) (|v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_9| Int)) (not (= (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_size_harness_~#queue~0#1.offset|)) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.base_9|) (+ |v_ULTIMATE.start_aws_priority_queue_size_harness_~#old_backpointers~0#1.offset_9| 8))))) is different from false [2022-07-22 22:33:09,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:33:09,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618813721] [2022-07-22 22:33:09,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:33:09,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738241344] [2022-07-22 22:33:09,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738241344] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:33:09,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:33:09,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-07-22 22:33:09,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578403618] [2022-07-22 22:33:09,497 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:33:09,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-22 22:33:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:33:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-22 22:33:09,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2070, Unknown=31, NotChecked=282, Total=2550 [2022-07-22 22:33:09,499 INFO L87 Difference]: Start difference. First operand 265 states and 335 transitions. Second operand has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) [2022-07-22 22:33:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:33:30,409 INFO L93 Difference]: Finished difference Result 547 states and 695 transitions. [2022-07-22 22:33:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-22 22:33:30,410 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) Word has length 206 [2022-07-22 22:33:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:33:30,412 INFO L225 Difference]: With dead ends: 547 [2022-07-22 22:33:30,412 INFO L226 Difference]: Without dead ends: 346 [2022-07-22 22:33:30,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 220 SyntacticMatches, 12 SemanticMatches, 62 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 63.3s TimeCoverageRelationStatistics Valid=247, Invalid=3361, Unknown=64, NotChecked=360, Total=4032 [2022-07-22 22:33:30,414 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 169 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 4966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3523 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:33:30,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1920 Invalid, 4966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1362 Invalid, 0 Unknown, 3523 Unchecked, 1.1s Time] [2022-07-22 22:33:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-22 22:33:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 309. [2022-07-22 22:33:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 218 states have (on average 1.146788990825688) internal successors, (250), 226 states have internal predecessors, (250), 53 states have call successors, (53), 27 states have call predecessors, (53), 37 states have return successors, (89), 55 states have call predecessors, (89), 52 states have call successors, (89) [2022-07-22 22:33:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 392 transitions. [2022-07-22 22:33:30,435 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 392 transitions. Word has length 206 [2022-07-22 22:33:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:33:30,436 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 392 transitions. [2022-07-22 22:33:30,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) [2022-07-22 22:33:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 392 transitions. [2022-07-22 22:33:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-22 22:33:30,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:33:30,439 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:33:30,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:33:30,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:33:30,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:33:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:33:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 791688642, now seen corresponding path program 1 times [2022-07-22 22:33:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:33:30,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646040719] [2022-07-22 22:33:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:33:30,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:33:30,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:33:30,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321173530] [2022-07-22 22:33:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:33:30,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:33:30,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:33:30,726 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:33:30,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:33:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:33:31,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-22 22:33:31,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:33:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-22 22:33:31,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:33:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:33:31,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646040719] [2022-07-22 22:33:31,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:33:31,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321173530] [2022-07-22 22:33:31,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321173530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:33:31,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:33:31,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 22:33:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320979044] [2022-07-22 22:33:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:33:31,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 22:33:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:33:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 22:33:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:33:31,467 INFO L87 Difference]: Start difference. First operand 309 states and 392 transitions. Second operand has 14 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-22 22:33:31,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:33:31,690 INFO L93 Difference]: Finished difference Result 499 states and 634 transitions. [2022-07-22 22:33:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:33:31,691 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 220 [2022-07-22 22:33:31,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:33:31,694 INFO L225 Difference]: With dead ends: 499 [2022-07-22 22:33:31,694 INFO L226 Difference]: Without dead ends: 319 [2022-07-22 22:33:31,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:33:31,695 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 12 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:33:31,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2651 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:33:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-22 22:33:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 314. [2022-07-22 22:33:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 222 states have (on average 1.1486486486486487) internal successors, (255), 231 states have internal predecessors, (255), 53 states have call successors, (53), 27 states have call predecessors, (53), 38 states have return successors, (92), 55 states have call predecessors, (92), 52 states have call successors, (92) [2022-07-22 22:33:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 400 transitions. [2022-07-22 22:33:31,714 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 400 transitions. Word has length 220 [2022-07-22 22:33:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:33:31,716 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 400 transitions. [2022-07-22 22:33:31,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-22 22:33:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 400 transitions. [2022-07-22 22:33:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 22:33:31,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:33:31,718 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:33:31,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 22:33:31,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 22:33:31,931 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:33:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:33:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash -725762892, now seen corresponding path program 2 times [2022-07-22 22:33:31,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:33:31,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987280964] [2022-07-22 22:33:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:33:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:33:31,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:33:31,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446166264] [2022-07-22 22:33:31,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:33:31,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:33:31,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:33:31,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:33:32,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:33:32,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:33:32,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:33:32,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 22:33:32,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:33:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 22:33:32,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:33:32,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:33:32,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987280964] [2022-07-22 22:33:32,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:33:32,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446166264] [2022-07-22 22:33:32,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446166264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:33:32,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:33:32,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:33:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189007236] [2022-07-22 22:33:32,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:33:32,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:33:32,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:33:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:33:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:33:32,671 INFO L87 Difference]: Start difference. First operand 314 states and 400 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 5 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:33:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:33:32,779 INFO L93 Difference]: Finished difference Result 546 states and 702 transitions. [2022-07-22 22:33:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:33:32,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 5 states have call predecessors, (25), 2 states have call successors, (25) Word has length 214 [2022-07-22 22:33:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:33:32,782 INFO L225 Difference]: With dead ends: 546 [2022-07-22 22:33:32,782 INFO L226 Difference]: Without dead ends: 327 [2022-07-22 22:33:32,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:33:32,784 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 13 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:33:32,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2173 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:33:32,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-22 22:33:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 318. [2022-07-22 22:33:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 226 states have (on average 1.1460176991150441) internal successors, (259), 233 states have internal predecessors, (259), 53 states have call successors, (53), 27 states have call predecessors, (53), 38 states have return successors, (92), 57 states have call predecessors, (92), 52 states have call successors, (92) [2022-07-22 22:33:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 404 transitions. [2022-07-22 22:33:32,805 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 404 transitions. Word has length 214 [2022-07-22 22:33:32,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:33:32,805 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 404 transitions. [2022-07-22 22:33:32,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 5 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:33:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 404 transitions. [2022-07-22 22:33:32,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 22:33:32,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:33:32,808 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:33:32,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:33:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 22:33:33,023 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:33:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:33:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2109144600, now seen corresponding path program 2 times [2022-07-22 22:33:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:33:33,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341052423] [2022-07-22 22:33:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:33:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:33:33,083 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:33:33,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789586651] [2022-07-22 22:33:33,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:33:33,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:33:33,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:33:33,085 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:33:33,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:33:34,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:33:34,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:33:34,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 246 conjunts are in the unsatisfiable core [2022-07-22 22:33:34,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:33:34,995 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2892 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2890 (Array Int Int)) (v_ArrVal_2888 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2892))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2888)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2890) |c_#memory_int|)))) is different from true [2022-07-22 22:33:35,021 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2892 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2890 (Array Int Int)) (v_ArrVal_2888 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2888))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2890) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2892)))))) is different from true [2022-07-22 22:33:35,126 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-22 22:33:35,126 INFO L390 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 1 case distinctions, treesize of input 41 treesize of output 50 [2022-07-22 22:33:35,144 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:33:35,144 INFO L390 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 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-22 22:33:35,175 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-22 22:33:35,175 INFO L390 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 1 case distinctions, treesize of input 35 treesize of output 44 [2022-07-22 22:33:35,228 INFO L390 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 6 [2022-07-22 22:33:35,913 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-22 22:33:35,914 INFO L390 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 25 treesize of output 7 [2022-07-22 22:33:37,458 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:33:37,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-22 22:33:40,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:33:40,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:33:48,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:48,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:48,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2022-07-22 22:33:48,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:48,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:48,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2022-07-22 22:34:05,545 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2906 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2906)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2904 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2904)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:34:06,370 INFO L390 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 29 treesize of output 28 [2022-07-22 22:34:06,375 INFO L390 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 29 treesize of output 28 [2022-07-22 22:34:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 99 proven. 62 refuted. 0 times theorem prover too weak. 33 trivial. 25 not checked. [2022-07-22 22:34:06,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:34:06,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:34:06,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341052423] [2022-07-22 22:34:06,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:34:06,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789586651] [2022-07-22 22:34:06,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789586651] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:34:06,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:34:06,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2022-07-22 22:34:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019039475] [2022-07-22 22:34:06,987 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:34:06,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-22 22:34:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:34:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-22 22:34:06,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2673, Unknown=20, NotChecked=318, Total=3192 [2022-07-22 22:34:06,989 INFO L87 Difference]: Start difference. First operand 318 states and 404 transitions. Second operand has 53 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 17 states have call successors, (28), 10 states have call predecessors, (28), 14 states have return successors, (26), 16 states have call predecessors, (26), 16 states have call successors, (26) [2022-07-22 22:34:07,918 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2892 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2890 (Array Int Int)) (v_ArrVal_2888 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2892))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2888)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2890) |c_#memory_int|))) (exists ((v_ArrVal_2906 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2906)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2904 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2904)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:34:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:34:25,102 INFO L93 Difference]: Finished difference Result 712 states and 915 transitions. [2022-07-22 22:34:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-22 22:34:25,102 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 17 states have call successors, (28), 10 states have call predecessors, (28), 14 states have return successors, (26), 16 states have call predecessors, (26), 16 states have call successors, (26) Word has length 202 [2022-07-22 22:34:25,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:34:25,111 INFO L225 Difference]: With dead ends: 712 [2022-07-22 22:34:25,111 INFO L226 Difference]: Without dead ends: 519 [2022-07-22 22:34:25,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 179 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2453 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=441, Invalid=7193, Unknown=38, NotChecked=700, Total=8372 [2022-07-22 22:34:25,115 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 281 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 7111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3100 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:34:25,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 2303 Invalid, 7111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 3856 Invalid, 0 Unknown, 3100 Unchecked, 2.6s Time] [2022-07-22 22:34:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-07-22 22:34:25,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 498. [2022-07-22 22:34:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 355 states have (on average 1.1492957746478873) internal successors, (408), 365 states have internal predecessors, (408), 86 states have call successors, (86), 43 states have call predecessors, (86), 56 states have return successors, (147), 89 states have call predecessors, (147), 84 states have call successors, (147) [2022-07-22 22:34:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 641 transitions. [2022-07-22 22:34:25,150 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 641 transitions. Word has length 202 [2022-07-22 22:34:25,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:34:25,151 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 641 transitions. [2022-07-22 22:34:25,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 17 states have call successors, (28), 10 states have call predecessors, (28), 14 states have return successors, (26), 16 states have call predecessors, (26), 16 states have call successors, (26) [2022-07-22 22:34:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 641 transitions. [2022-07-22 22:34:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 22:34:25,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:34:25,154 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:34:25,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:34:25,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:34:25,363 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:34:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:34:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1054581200, now seen corresponding path program 3 times [2022-07-22 22:34:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:34:25,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633079892] [2022-07-22 22:34:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:34:25,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:34:25,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:34:25,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545379137] [2022-07-22 22:34:25,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:34:25,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:34:25,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:34:25,436 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:34:25,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:34:26,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 22:34:26,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:34:26,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 165 conjunts are in the unsatisfiable core [2022-07-22 22:34:26,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:34:26,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:34:26,901 INFO L356 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2022-07-22 22:34:26,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 59 [2022-07-22 22:35:45,438 WARN L233 SmtUtils]: Spent 14.31s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)