./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_array_list_clean_up_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:27:17,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:27:17,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:27:17,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:27:17,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:27:17,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:27:17,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:27:17,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:27:17,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:27:17,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:27:17,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:27:17,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:27:17,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:27:17,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:27:17,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:27:17,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:27:17,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:27:17,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:27:17,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:27:17,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:27:17,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:27:17,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:27:17,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:27:17,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:27:17,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:27:17,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:27:17,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:27:17,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:27:17,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:27:17,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:27:17,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:27:17,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:27:17,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:27:17,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:27:17,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:27:17,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:27:17,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:27:17,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:27:17,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:27:17,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:27:17,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:27:17,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:27:17,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:27:17,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:27:17,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:27:17,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:27:17,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:27:17,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:27:17,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:27:17,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:27:17,581 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:27:17,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:27:17,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:27:17,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:27:17,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:27:17,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:27:17,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:27:17,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:27:17,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:27:17,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:27:17,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:27:17,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:27:17,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:27:17,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:27:17,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:27:17,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:27:17,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:27:17,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:27:17,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:27:17,585 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:27:17,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:27:17,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:27:17,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:27:17,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-12-21 15:27:17,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:27:17,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:27:17,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:27:17,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:27:17,780 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:27:17,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-12-21 15:27:17,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4193385/017f7271a78c40c1a00493d198c3f007/FLAG79ad4adbd [2021-12-21 15:27:18,300 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:27:18,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-12-21 15:27:18,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4193385/017f7271a78c40c1a00493d198c3f007/FLAG79ad4adbd [2021-12-21 15:27:18,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4193385/017f7271a78c40c1a00493d198c3f007 [2021-12-21 15:27:18,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:27:18,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:27:18,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:27:18,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:27:18,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:27:18,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:18" (1/1) ... [2021-12-21 15:27:18,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62af3522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:18, skipping insertion in model container [2021-12-21 15:27:18,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:18" (1/1) ... [2021-12-21 15:27:18,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:27:18,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:27:18,801 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_array_list_clean_up_harness.i[4497,4510] [2021-12-21 15:27:18,815 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_array_list_clean_up_harness.i[4557,4570] [2021-12-21 15:27:19,219 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:27:19,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,262 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,262 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,262 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,263 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,424 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:27:19,424 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:27:19,425 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:27:19,426 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:27:19,427 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:27:19,430 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:27:19,431 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:27:19,432 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:27:19,433 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:27:19,433 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:27:19,516 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:27:19,596 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:27:19,615 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_array_list_clean_up_harness.i[4497,4510] [2021-12-21 15:27:19,616 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_array_list_clean_up_harness.i[4557,4570] [2021-12-21 15:27:19,648 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:27:19,672 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,675 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,675 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,676 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,676 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,679 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,680 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,680 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,698 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:27:19,702 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:27:19,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:27:19,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:27:19,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:27:19,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:27:19,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:27:19,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:27:19,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:27:19,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:27:19,726 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,732 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:19,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:27:19,898 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:27:19,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19 WrapperNode [2021-12-21 15:27:19,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:27:19,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:27:19,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:27:19,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:27:19,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:19,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,013 INFO L137 Inliner]: procedures = 690, calls = 1553, calls flagged for inlining = 48, calls inlined = 7, statements flattened = 577 [2021-12-21 15:27:20,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:27:20,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:27:20,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:27:20,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:27:20,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:27:20,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:27:20,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:27:20,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:27:20,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (1/1) ... [2021-12-21 15:27:20,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:27:20,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:20,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:27:20,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:27:20,145 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-21 15:27:20,145 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-21 15:27:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:27:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-21 15:27:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-21 15:27:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-21 15:27:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-21 15:27:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:27:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:27:20,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:27:20,148 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:27:20,148 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:27:20,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:27:20,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:27:20,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:27:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:27:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:27:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:27:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:27:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:27:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:27:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-21 15:27:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-21 15:27:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-21 15:27:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-21 15:27:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 15:27:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 15:27:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:27:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:27:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:27:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:27:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:27:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:27:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:27:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-21 15:27:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-21 15:27:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:27:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:27:20,360 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:27:20,362 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:27:20,994 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:27:21,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:27:21,002 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 15:27:21,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:21 BoogieIcfgContainer [2021-12-21 15:27:21,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:27:21,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:27:21,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:27:21,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:27:21,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:27:18" (1/3) ... [2021-12-21 15:27:21,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2042d19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:21, skipping insertion in model container [2021-12-21 15:27:21,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:19" (2/3) ... [2021-12-21 15:27:21,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2042d19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:21, skipping insertion in model container [2021-12-21 15:27:21,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:21" (3/3) ... [2021-12-21 15:27:21,011 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2021-12-21 15:27:21,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:27:21,015 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:27:21,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:27:21,069 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:27:21,070 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:27:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-21 15:27:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 15:27:21,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:21,094 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:21,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:21,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1460968734, now seen corresponding path program 1 times [2021-12-21 15:27:21,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:21,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168434120] [2021-12-21 15:27:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:21,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:27:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:27:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 15:27:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:27:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:27:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:27:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:27:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:27:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:27:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 15:27:21,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168434120] [2021-12-21 15:27:21,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168434120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:21,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:21,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 15:27:21,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007872349] [2021-12-21 15:27:21,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:21,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:27:21,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:27:21,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:27:21,651 INFO L87 Difference]: Start difference. First operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 15:27:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:21,886 INFO L93 Difference]: Finished difference Result 228 states and 297 transitions. [2021-12-21 15:27:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:27:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-12-21 15:27:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:21,899 INFO L225 Difference]: With dead ends: 228 [2021-12-21 15:27:21,899 INFO L226 Difference]: Without dead ends: 114 [2021-12-21 15:27:21,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:27:21,912 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:21,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 162 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:27:21,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-21 15:27:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2021-12-21 15:27:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-21 15:27:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2021-12-21 15:27:21,949 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 65 [2021-12-21 15:27:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:21,949 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2021-12-21 15:27:21,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 15:27:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2021-12-21 15:27:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 15:27:21,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:21,957 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:21,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:27:21,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:21,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1894775411, now seen corresponding path program 1 times [2021-12-21 15:27:21,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:21,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233180584] [2021-12-21 15:27:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:21,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:27:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:27:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 15:27:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:27:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:27:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:27:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:27:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:27:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:27:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 15:27:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 15:27:22,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:22,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233180584] [2021-12-21 15:27:22,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233180584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:22,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:22,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:27:22,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789447751] [2021-12-21 15:27:22,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:22,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:27:22,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:27:22,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:27:22,217 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 15:27:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:22,560 INFO L93 Difference]: Finished difference Result 199 states and 243 transitions. [2021-12-21 15:27:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:27:22,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2021-12-21 15:27:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:22,562 INFO L225 Difference]: With dead ends: 199 [2021-12-21 15:27:22,562 INFO L226 Difference]: Without dead ends: 126 [2021-12-21 15:27:22,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:27:22,563 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 88 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:22,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 366 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:27:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-21 15:27:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2021-12-21 15:27:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 74 states have internal predecessors, (88), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-21 15:27:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-12-21 15:27:22,573 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 71 [2021-12-21 15:27:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:22,573 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-12-21 15:27:22,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 15:27:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2021-12-21 15:27:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 15:27:22,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:22,576 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:22,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:27:22,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:22,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1692678563, now seen corresponding path program 1 times [2021-12-21 15:27:22,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:22,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741998414] [2021-12-21 15:27:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:22,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:22,640 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:22,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284685468] [2021-12-21 15:27:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:22,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:22,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:22,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:22,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:27:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:22,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2123 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 15:27:22,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 15:27:23,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:23,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:23,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741998414] [2021-12-21 15:27:23,113 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:23,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284685468] [2021-12-21 15:27:23,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284685468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:23,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:23,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:27:23,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247953682] [2021-12-21 15:27:23,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:23,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:27:23,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:23,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:27:23,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:27:23,115 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-21 15:27:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:23,149 INFO L93 Difference]: Finished difference Result 190 states and 229 transitions. [2021-12-21 15:27:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:27:23,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 86 [2021-12-21 15:27:23,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:23,151 INFO L225 Difference]: With dead ends: 190 [2021-12-21 15:27:23,151 INFO L226 Difference]: Without dead ends: 117 [2021-12-21 15:27:23,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:27:23,152 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 4 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:23,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 890 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:23,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-21 15:27:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-12-21 15:27:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-21 15:27:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2021-12-21 15:27:23,159 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 86 [2021-12-21 15:27:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:23,160 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2021-12-21 15:27:23,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-21 15:27:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2021-12-21 15:27:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 15:27:23,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:23,161 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:27:23,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 15:27:23,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:23,378 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:23,379 INFO L85 PathProgramCache]: Analyzing trace with hash -124616364, now seen corresponding path program 1 times [2021-12-21 15:27:23,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:23,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841614172] [2021-12-21 15:27:23,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:23,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:23,418 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:23,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815679815] [2021-12-21 15:27:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:23,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:23,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:23,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:23,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:27:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:23,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 15:27:23,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 15:27:23,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:23,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:23,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841614172] [2021-12-21 15:27:23,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:23,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815679815] [2021-12-21 15:27:23,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815679815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:23,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:23,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:27:23,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195908938] [2021-12-21 15:27:23,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:23,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:27:23,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:23,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:27:23,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:27:23,896 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:23,911 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2021-12-21 15:27:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:27:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-12-21 15:27:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:23,913 INFO L225 Difference]: With dead ends: 134 [2021-12-21 15:27:23,913 INFO L226 Difference]: Without dead ends: 114 [2021-12-21 15:27:23,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:27:23,914 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 2 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:23,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 382 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-21 15:27:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-12-21 15:27:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 78 states have internal predecessors, (92), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-21 15:27:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2021-12-21 15:27:23,921 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 86 [2021-12-21 15:27:23,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:23,921 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2021-12-21 15:27:23,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2021-12-21 15:27:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 15:27:23,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:23,923 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:27:23,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:24,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-21 15:27:24,138 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:24,138 INFO L85 PathProgramCache]: Analyzing trace with hash -117447722, now seen corresponding path program 1 times [2021-12-21 15:27:24,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:24,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199135047] [2021-12-21 15:27:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:24,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:24,176 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:24,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134848648] [2021-12-21 15:27:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:24,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:24,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:24,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:24,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:27:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:24,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 15:27:24,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 15:27:24,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:24,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:24,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199135047] [2021-12-21 15:27:24,625 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:24,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134848648] [2021-12-21 15:27:24,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134848648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:24,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:24,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:27:24,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085160998] [2021-12-21 15:27:24,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:24,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:27:24,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:27:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:27:24,627 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:24,651 INFO L93 Difference]: Finished difference Result 166 states and 198 transitions. [2021-12-21 15:27:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:27:24,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2021-12-21 15:27:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:24,652 INFO L225 Difference]: With dead ends: 166 [2021-12-21 15:27:24,652 INFO L226 Difference]: Without dead ends: 119 [2021-12-21 15:27:24,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:27:24,653 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:24,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 370 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-21 15:27:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2021-12-21 15:27:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 79 states have internal predecessors, (93), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-21 15:27:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 138 transitions. [2021-12-21 15:27:24,660 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 138 transitions. Word has length 87 [2021-12-21 15:27:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:24,660 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 138 transitions. [2021-12-21 15:27:24,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 138 transitions. [2021-12-21 15:27:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 15:27:24,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:24,662 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:24,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:24,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:24,868 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:24,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 995990719, now seen corresponding path program 1 times [2021-12-21 15:27:24,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:24,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121307347] [2021-12-21 15:27:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:24,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:24,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:24,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848850699] [2021-12-21 15:27:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:24,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:24,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:24,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:24,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:27:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:25,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 15:27:25,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 15:27:25,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:25,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:25,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121307347] [2021-12-21 15:27:25,472 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:25,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848850699] [2021-12-21 15:27:25,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848850699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:25,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:25,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:27:25,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797563212] [2021-12-21 15:27:25,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:25,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:27:25,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:27:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:27:25,474 INFO L87 Difference]: Start difference. First operand 115 states and 138 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:25,493 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2021-12-21 15:27:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:27:25,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2021-12-21 15:27:25,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:25,494 INFO L225 Difference]: With dead ends: 160 [2021-12-21 15:27:25,494 INFO L226 Difference]: Without dead ends: 117 [2021-12-21 15:27:25,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:27:25,495 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 4 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:25,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 510 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:25,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-21 15:27:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2021-12-21 15:27:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 79 states have internal predecessors, (92), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-21 15:27:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2021-12-21 15:27:25,500 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 87 [2021-12-21 15:27:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:25,500 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2021-12-21 15:27:25,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2021-12-21 15:27:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-21 15:27:25,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:25,501 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:25,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:25,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:25,723 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:25,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash -462422751, now seen corresponding path program 1 times [2021-12-21 15:27:25,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:25,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591343477] [2021-12-21 15:27:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:25,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:25,780 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:25,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567555566] [2021-12-21 15:27:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:25,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:25,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:25,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:25,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:27:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:26,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-21 15:27:26,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:27,299 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#t~loopctr731_5| Int) (|#Ultimate.C_memset_#ptr.offset| Int)) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base|) (+ |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr731_5|) |c_#Ultimate.C_memset_#value|)) |c_#memory_int|)) is different from true [2021-12-21 15:27:27,335 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-21 15:27:27,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2021-12-21 15:27:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 1 not checked. [2021-12-21 15:27:27,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:29,153 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr731_11| Int) (|v_#Ultimate.C_memset_#ptr.offset_6| Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_array_list_clean_up_~list#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_array_list_clean_up_~list#1.base|) (+ |v_#Ultimate.C_memset_#t~loopctr731_11| |v_#Ultimate.C_memset_#ptr.offset_6|) 0)) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_array_list_clean_up_harness_~#list~0#1.offset|) 256) 0)) is different from false [2021-12-21 15:27:29,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:29,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591343477] [2021-12-21 15:27:29,155 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:29,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567555566] [2021-12-21 15:27:29,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567555566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:27:29,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:27:29,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-12-21 15:27:29,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195141523] [2021-12-21 15:27:29,156 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 15:27:29,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 15:27:29,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:29,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 15:27:29,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=388, Unknown=2, NotChecked=82, Total=552 [2021-12-21 15:27:29,158 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 6 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-21 15:27:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:29,610 INFO L93 Difference]: Finished difference Result 172 states and 217 transitions. [2021-12-21 15:27:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 15:27:29,610 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 6 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 90 [2021-12-21 15:27:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:29,612 INFO L225 Difference]: With dead ends: 172 [2021-12-21 15:27:29,612 INFO L226 Difference]: Without dead ends: 165 [2021-12-21 15:27:29,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=142, Invalid=794, Unknown=2, NotChecked=118, Total=1056 [2021-12-21 15:27:29,614 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 91 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 603 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:29,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 811 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 362 Invalid, 0 Unknown, 603 Unchecked, 0.3s Time] [2021-12-21 15:27:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-21 15:27:29,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2021-12-21 15:27:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 112 states have (on average 1.1875) internal successors, (133), 115 states have internal predecessors, (133), 30 states have call successors, (30), 15 states have call predecessors, (30), 19 states have return successors, (43), 31 states have call predecessors, (43), 29 states have call successors, (43) [2021-12-21 15:27:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 206 transitions. [2021-12-21 15:27:29,625 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 206 transitions. Word has length 90 [2021-12-21 15:27:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:29,626 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 206 transitions. [2021-12-21 15:27:29,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 6 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-21 15:27:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 206 transitions. [2021-12-21 15:27:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 15:27:29,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:29,628 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:29,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:29,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:29,843 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash 893232516, now seen corresponding path program 1 times [2021-12-21 15:27:29,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:29,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216447309] [2021-12-21 15:27:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:29,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:29,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:29,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658181724] [2021-12-21 15:27:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:29,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:29,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:29,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:29,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:27:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:30,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-21 15:27:30,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:30,263 INFO L387 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 [2021-12-21 15:27:30,398 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 15:27:30,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-21 15:27:30,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:27:30,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:27:30,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-12-21 15:27:30,670 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_391 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_391) |c_#memory_$Pointer$.base|)) is different from true [2021-12-21 15:27:30,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:27:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 15:27:30,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:31,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216447309] [2021-12-21 15:27:31,170 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658181724] [2021-12-21 15:27:31,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658181724] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:27:31,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:27:31,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-12-21 15:27:31,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795077747] [2021-12-21 15:27:31,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 15:27:31,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 15:27:31,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 15:27:31,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=351, Unknown=6, NotChecked=38, Total=462 [2021-12-21 15:27:31,172 INFO L87 Difference]: Start difference. First operand 162 states and 206 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-21 15:27:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:31,543 INFO L93 Difference]: Finished difference Result 273 states and 341 transitions. [2021-12-21 15:27:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 15:27:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) Word has length 96 [2021-12-21 15:27:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:31,544 INFO L225 Difference]: With dead ends: 273 [2021-12-21 15:27:31,544 INFO L226 Difference]: Without dead ends: 174 [2021-12-21 15:27:31,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=546, Unknown=14, NotChecked=48, Total=702 [2021-12-21 15:27:31,545 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 92 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 679 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:31,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 523 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 463 Invalid, 0 Unknown, 679 Unchecked, 0.3s Time] [2021-12-21 15:27:31,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-12-21 15:27:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2021-12-21 15:27:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 119 states have (on average 1.184873949579832) internal successors, (141), 123 states have internal predecessors, (141), 30 states have call successors, (30), 16 states have call predecessors, (30), 21 states have return successors, (46), 31 states have call predecessors, (46), 29 states have call successors, (46) [2021-12-21 15:27:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 217 transitions. [2021-12-21 15:27:31,553 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 217 transitions. Word has length 96 [2021-12-21 15:27:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:31,553 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 217 transitions. [2021-12-21 15:27:31,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-21 15:27:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 217 transitions. [2021-12-21 15:27:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 15:27:31,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:31,555 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:31,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:31,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:31,776 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:31,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash 412152258, now seen corresponding path program 1 times [2021-12-21 15:27:31,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:31,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968032969] [2021-12-21 15:27:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:31,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:31,826 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:31,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457238383] [2021-12-21 15:27:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:31,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:31,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:31,840 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:31,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:27:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:32,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:27:32,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 15:27:32,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:32,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:32,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968032969] [2021-12-21 15:27:32,313 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:32,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457238383] [2021-12-21 15:27:32,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457238383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:32,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:32,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:27:32,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448798689] [2021-12-21 15:27:32,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:32,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:27:32,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:27:32,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:27:32,315 INFO L87 Difference]: Start difference. First operand 171 states and 217 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:27:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:32,352 INFO L93 Difference]: Finished difference Result 310 states and 402 transitions. [2021-12-21 15:27:32,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:27:32,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2021-12-21 15:27:32,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:32,355 INFO L225 Difference]: With dead ends: 310 [2021-12-21 15:27:32,355 INFO L226 Difference]: Without dead ends: 179 [2021-12-21 15:27:32,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:27:32,359 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 7 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:32,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 382 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-21 15:27:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2021-12-21 15:27:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 121 states have (on average 1.1735537190082646) internal successors, (142), 125 states have internal predecessors, (142), 30 states have call successors, (30), 16 states have call predecessors, (30), 21 states have return successors, (46), 31 states have call predecessors, (46), 29 states have call successors, (46) [2021-12-21 15:27:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 218 transitions. [2021-12-21 15:27:32,376 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 218 transitions. Word has length 96 [2021-12-21 15:27:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:32,376 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 218 transitions. [2021-12-21 15:27:32,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:27:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 218 transitions. [2021-12-21 15:27:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 15:27:32,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:32,378 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:32,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:32,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:32,584 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1999511127, now seen corresponding path program 2 times [2021-12-21 15:27:32,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:32,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530270850] [2021-12-21 15:27:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:32,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:32,637 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:32,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781392583] [2021-12-21 15:27:32,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:27:32,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:32,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:32,638 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:32,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:27:33,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:27:33,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:27:33,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 15:27:33,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 15:27:33,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 15:27:33,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530270850] [2021-12-21 15:27:33,344 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781392583] [2021-12-21 15:27:33,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781392583] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:27:33,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:27:33,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-21 15:27:33,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046540473] [2021-12-21 15:27:33,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:27:33,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:27:33,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:33,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:27:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:27:33,345 INFO L87 Difference]: Start difference. First operand 173 states and 218 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 15:27:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:33,431 INFO L93 Difference]: Finished difference Result 262 states and 334 transitions. [2021-12-21 15:27:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:27:33,432 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 91 [2021-12-21 15:27:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:33,433 INFO L225 Difference]: With dead ends: 262 [2021-12-21 15:27:33,433 INFO L226 Difference]: Without dead ends: 185 [2021-12-21 15:27:33,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:27:33,434 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 28 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:33,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 867 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:27:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-21 15:27:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2021-12-21 15:27:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 129 states have (on average 1.178294573643411) internal successors, (152), 133 states have internal predecessors, (152), 30 states have call successors, (30), 16 states have call predecessors, (30), 21 states have return successors, (46), 31 states have call predecessors, (46), 29 states have call successors, (46) [2021-12-21 15:27:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 228 transitions. [2021-12-21 15:27:33,442 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 228 transitions. Word has length 91 [2021-12-21 15:27:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:33,443 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 228 transitions. [2021-12-21 15:27:33,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 15:27:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 228 transitions. [2021-12-21 15:27:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 15:27:33,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:33,444 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:33,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:33,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 15:27:33,660 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash 134736496, now seen corresponding path program 1 times [2021-12-21 15:27:33,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:33,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016931745] [2021-12-21 15:27:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:33,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:33,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:33,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462013060] [2021-12-21 15:27:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:33,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:33,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:33,719 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:33,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 15:27:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:34,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:27:34,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-21 15:27:34,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:34,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:34,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016931745] [2021-12-21 15:27:34,196 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:34,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462013060] [2021-12-21 15:27:34,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462013060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:34,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:34,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:27:34,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584574670] [2021-12-21 15:27:34,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:34,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:27:34,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:34,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:27:34,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:27:34,197 INFO L87 Difference]: Start difference. First operand 181 states and 228 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:27:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:34,312 INFO L93 Difference]: Finished difference Result 258 states and 321 transitions. [2021-12-21 15:27:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:27:34,313 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 93 [2021-12-21 15:27:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:34,314 INFO L225 Difference]: With dead ends: 258 [2021-12-21 15:27:34,314 INFO L226 Difference]: Without dead ends: 179 [2021-12-21 15:27:34,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:27:34,315 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 157 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:34,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 451 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:27:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-21 15:27:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-12-21 15:27:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 128 states have (on average 1.171875) internal successors, (150), 131 states have internal predecessors, (150), 30 states have call successors, (30), 16 states have call predecessors, (30), 20 states have return successors, (44), 31 states have call predecessors, (44), 29 states have call successors, (44) [2021-12-21 15:27:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2021-12-21 15:27:34,323 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 93 [2021-12-21 15:27:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:34,323 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2021-12-21 15:27:34,323 INFO L471 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:27:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2021-12-21 15:27:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 15:27:34,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:34,325 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:27:34,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:34,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:34,543 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash 966825052, now seen corresponding path program 1 times [2021-12-21 15:27:34,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:34,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138420617] [2021-12-21 15:27:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:34,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:34,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:34,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771953574] [2021-12-21 15:27:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:34,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:34,577 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:34,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 15:27:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:34,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-21 15:27:34,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:35,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:27:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-21 15:27:35,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:35,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-12-21 15:27:35,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-12-21 15:27:35,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-12-21 15:27:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-21 15:27:35,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:35,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138420617] [2021-12-21 15:27:35,792 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:35,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771953574] [2021-12-21 15:27:35,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771953574] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:27:35,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:27:35,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2021-12-21 15:27:35,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881874762] [2021-12-21 15:27:35,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:27:35,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-21 15:27:35,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-21 15:27:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-12-21 15:27:35,793 INFO L87 Difference]: Start difference. First operand 179 states and 224 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 21 states have internal predecessors, (83), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-21 15:27:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:36,110 INFO L93 Difference]: Finished difference Result 193 states and 239 transitions. [2021-12-21 15:27:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 15:27:36,110 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 21 states have internal predecessors, (83), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2021-12-21 15:27:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:36,111 INFO L225 Difference]: With dead ends: 193 [2021-12-21 15:27:36,111 INFO L226 Difference]: Without dead ends: 186 [2021-12-21 15:27:36,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2021-12-21 15:27:36,112 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 43 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:36,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1627 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 276 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2021-12-21 15:27:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-12-21 15:27:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 166. [2021-12-21 15:27:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 119 states have (on average 1.1596638655462186) internal successors, (138), 121 states have internal predecessors, (138), 27 states have call successors, (27), 16 states have call predecessors, (27), 19 states have return successors, (38), 28 states have call predecessors, (38), 26 states have call successors, (38) [2021-12-21 15:27:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 203 transitions. [2021-12-21 15:27:36,119 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 203 transitions. Word has length 108 [2021-12-21 15:27:36,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:36,120 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 203 transitions. [2021-12-21 15:27:36,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 21 states have internal predecessors, (83), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-21 15:27:36,120 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 203 transitions. [2021-12-21 15:27:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 15:27:36,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:36,121 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-21 15:27:36,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:36,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 15:27:36,335 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1799659061, now seen corresponding path program 1 times [2021-12-21 15:27:36,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:36,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549077714] [2021-12-21 15:27:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:36,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:36,367 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:36,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074877811] [2021-12-21 15:27:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:36,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:36,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:36,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 15:27:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:36,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 15:27:36,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-21 15:27:36,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-21 15:27:37,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:37,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549077714] [2021-12-21 15:27:37,065 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:37,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074877811] [2021-12-21 15:27:37,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074877811] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:27:37,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:27:37,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-21 15:27:37,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165718232] [2021-12-21 15:27:37,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:27:37,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:27:37,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:37,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:27:37,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:27:37,067 INFO L87 Difference]: Start difference. First operand 166 states and 203 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 15:27:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:37,116 INFO L93 Difference]: Finished difference Result 201 states and 243 transitions. [2021-12-21 15:27:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:27:37,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2021-12-21 15:27:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:37,119 INFO L225 Difference]: With dead ends: 201 [2021-12-21 15:27:37,119 INFO L226 Difference]: Without dead ends: 169 [2021-12-21 15:27:37,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:27:37,121 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 11 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:37,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 382 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-21 15:27:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-21 15:27:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 122 states have (on average 1.1557377049180328) internal successors, (141), 124 states have internal predecessors, (141), 27 states have call successors, (27), 16 states have call predecessors, (27), 19 states have return successors, (38), 28 states have call predecessors, (38), 26 states have call successors, (38) [2021-12-21 15:27:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 206 transitions. [2021-12-21 15:27:37,130 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 206 transitions. Word has length 111 [2021-12-21 15:27:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:37,130 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 206 transitions. [2021-12-21 15:27:37,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 15:27:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 206 transitions. [2021-12-21 15:27:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 15:27:37,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:37,131 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2021-12-21 15:27:37,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-21 15:27:37,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 15:27:37,352 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash -564772413, now seen corresponding path program 2 times [2021-12-21 15:27:37,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:37,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53872950] [2021-12-21 15:27:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:37,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:37,391 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:37,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644517480] [2021-12-21 15:27:37,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:27:37,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:37,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:37,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:27:37,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 15:27:37,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:27:37,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:27:37,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-21 15:27:37,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:38,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:27:38,130 INFO L353 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-12-21 15:27:38,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-12-21 15:27:38,164 INFO L353 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-21 15:27:38,165 INFO L387 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 30 treesize of output 32 [2021-12-21 15:27:38,203 INFO L353 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-21 15:27:38,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-12-21 15:27:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-21 15:27:38,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:39,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 105 [2021-12-21 15:27:39,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-21 15:27:39,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 368 treesize of output 364 [2021-12-21 15:27:39,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-21 15:27:39,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:27:39,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 180 [2021-12-21 15:27:39,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-21 15:27:39,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:27:39,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:27:39,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2021-12-21 15:27:39,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-21 15:27:39,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:27:39,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:27:39,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:27:39,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-12-21 15:27:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-21 15:27:40,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:40,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53872950] [2021-12-21 15:27:40,127 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:40,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644517480] [2021-12-21 15:27:40,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644517480] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:27:40,128 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:27:40,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2021-12-21 15:27:40,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189033202] [2021-12-21 15:27:40,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:27:40,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-21 15:27:40,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-21 15:27:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2021-12-21 15:27:40,131 INFO L87 Difference]: Start difference. First operand 169 states and 206 transitions. Second operand has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-21 15:27:41,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:41,033 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2021-12-21 15:27:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 15:27:41,033 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 114 [2021-12-21 15:27:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:41,034 INFO L225 Difference]: With dead ends: 184 [2021-12-21 15:27:41,034 INFO L226 Difference]: Without dead ends: 177 [2021-12-21 15:27:41,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2021-12-21 15:27:41,035 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 74 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:41,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 2122 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 664 Invalid, 0 Unknown, 124 Unchecked, 0.6s Time] [2021-12-21 15:27:41,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-21 15:27:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174. [2021-12-21 15:27:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 126 states have (on average 1.1507936507936507) internal successors, (145), 129 states have internal predecessors, (145), 27 states have call successors, (27), 16 states have call predecessors, (27), 20 states have return successors, (40), 28 states have call predecessors, (40), 26 states have call successors, (40) [2021-12-21 15:27:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 212 transitions. [2021-12-21 15:27:41,048 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 212 transitions. Word has length 114 [2021-12-21 15:27:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:41,048 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 212 transitions. [2021-12-21 15:27:41,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-21 15:27:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 212 transitions. [2021-12-21 15:27:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 15:27:41,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:41,049 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:27:41,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-21 15:27:41,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 15:27:41,252 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash -582835346, now seen corresponding path program 3 times [2021-12-21 15:27:41,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917339941] [2021-12-21 15:27:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:41,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:41,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:41,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207202484] [2021-12-21 15:27:41,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:27:41,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:41,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:41,299 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) [2021-12-21 15:27:41,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 15:27:42,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-21 15:27:42,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:27:42,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-21 15:27:42,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:42,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-21 15:27:42,832 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-21 15:27:42,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 15:27:42,862 INFO L353 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-12-21 15:27:42,863 INFO L387 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 33 treesize of output 35 [2021-12-21 15:27:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-21 15:27:42,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:43,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:43,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917339941] [2021-12-21 15:27:43,068 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:43,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207202484] [2021-12-21 15:27:43,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207202484] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:27:43,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:27:43,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-12-21 15:27:43,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061693002] [2021-12-21 15:27:43,069 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 15:27:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:27:43,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:27:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:27:43,070 INFO L87 Difference]: Start difference. First operand 174 states and 212 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-21 15:27:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:43,334 INFO L93 Difference]: Finished difference Result 208 states and 250 transitions. [2021-12-21 15:27:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:27:43,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 117 [2021-12-21 15:27:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:43,345 INFO L225 Difference]: With dead ends: 208 [2021-12-21 15:27:43,345 INFO L226 Difference]: Without dead ends: 178 [2021-12-21 15:27:43,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:27:43,346 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 35 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:43,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1201 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:27:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-21 15:27:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2021-12-21 15:27:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 127 states have (on average 1.1496062992125984) internal successors, (146), 130 states have internal predecessors, (146), 27 states have call successors, (27), 16 states have call predecessors, (27), 20 states have return successors, (40), 28 states have call predecessors, (40), 26 states have call successors, (40) [2021-12-21 15:27:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 213 transitions. [2021-12-21 15:27:43,354 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 213 transitions. Word has length 117 [2021-12-21 15:27:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:43,354 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 213 transitions. [2021-12-21 15:27:43,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-21 15:27:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 213 transitions. [2021-12-21 15:27:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 15:27:43,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:43,356 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-12-21 15:27:43,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:43,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 15:27:43,562 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash 36072420, now seen corresponding path program 1 times [2021-12-21 15:27:43,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:43,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096657883] [2021-12-21 15:27:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:43,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:43,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:43,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754677672] [2021-12-21 15:27:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:43,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:43,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:43,602 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) [2021-12-21 15:27:43,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 15:27:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:43,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-21 15:27:43,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-21 15:27:44,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:44,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:44,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096657883] [2021-12-21 15:27:44,208 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:44,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754677672] [2021-12-21 15:27:44,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754677672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:44,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:44,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-21 15:27:44,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331798506] [2021-12-21 15:27:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:44,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 15:27:44,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:27:44,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 15:27:44,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:27:44,209 INFO L87 Difference]: Start difference. First operand 175 states and 213 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 15:27:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:44,388 INFO L93 Difference]: Finished difference Result 235 states and 282 transitions. [2021-12-21 15:27:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 15:27:44,389 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2021-12-21 15:27:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:44,390 INFO L225 Difference]: With dead ends: 235 [2021-12-21 15:27:44,390 INFO L226 Difference]: Without dead ends: 176 [2021-12-21 15:27:44,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:27:44,391 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 15 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:44,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1809 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:27:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-21 15:27:44,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 169. [2021-12-21 15:27:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 123 states have (on average 1.1544715447154472) internal successors, (142), 126 states have internal predecessors, (142), 26 states have call successors, (26), 16 states have call predecessors, (26), 19 states have return successors, (34), 26 states have call predecessors, (34), 25 states have call successors, (34) [2021-12-21 15:27:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2021-12-21 15:27:44,399 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 124 [2021-12-21 15:27:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:44,401 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2021-12-21 15:27:44,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 15:27:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2021-12-21 15:27:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 15:27:44,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:44,403 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:27:44,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:44,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:44,615 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:44,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1973683772, now seen corresponding path program 4 times [2021-12-21 15:27:44,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:27:44,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386629813] [2021-12-21 15:27:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:44,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:27:44,681 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:27:44,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595006956] [2021-12-21 15:27:44,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 15:27:44,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:27:44,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:44,682 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) [2021-12-21 15:27:44,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 15:27:45,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 15:27:45,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:27:45,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 75 conjunts are in the unsatisfiable core [2021-12-21 15:27:45,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:45,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-21 15:27:45,299 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-21 15:27:45,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-21 15:27:45,330 INFO L353 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-21 15:27:45,330 INFO L387 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 30 treesize of output 32 [2021-12-21 15:27:45,375 INFO L353 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-21 15:27:45,375 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-12-21 15:27:45,423 INFO L353 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-21 15:27:45,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-12-21 15:27:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-21 15:27:45,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:46,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7562 treesize of output 7514 [2021-12-21 15:27:46,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:27:46,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386629813] [2021-12-21 15:27:46,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:27:46,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595006956] [2021-12-21 15:27:46,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-21 15:27:46,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:46,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-12-21 15:27:46,552 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-12-21 15:27:46,552 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-12-21 15:27:46,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 15:27:46,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:46,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 15:27:46,773 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:27:46,775 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 15:27:46,782 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-12-21 15:27:46,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:27:46 BoogieIcfgContainer [2021-12-21 15:27:46,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 15:27:46,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 15:27:46,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 15:27:46,806 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 15:27:46,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:21" (3/4) ... [2021-12-21 15:27:46,809 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 15:27:46,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 15:27:46,809 INFO L158 Benchmark]: Toolchain (without parser) took 28254.59ms. Allocated memory was 98.6MB in the beginning and 325.1MB in the end (delta: 226.5MB). Free memory was 61.7MB in the beginning and 153.8MB in the end (delta: -92.1MB). Peak memory consumption was 134.1MB. Max. memory is 16.1GB. [2021-12-21 15:27:46,810 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:27:46,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1342.55ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 61.5MB in the beginning and 61.0MB in the end (delta: 478.4kB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2021-12-21 15:27:46,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.23ms. Allocated memory is still 121.6MB. Free memory was 61.0MB in the beginning and 53.2MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 15:27:46,810 INFO L158 Benchmark]: Boogie Preprocessor took 61.28ms. Allocated memory is still 121.6MB. Free memory was 52.6MB in the beginning and 47.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 15:27:46,810 INFO L158 Benchmark]: RCFGBuilder took 927.78ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 47.8MB in the beginning and 68.3MB in the end (delta: -20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 15:27:46,810 INFO L158 Benchmark]: TraceAbstraction took 25800.16ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 68.3MB in the beginning and 153.8MB in the end (delta: -85.5MB). Peak memory consumption was 155.8MB. Max. memory is 16.1GB. [2021-12-21 15:27:46,810 INFO L158 Benchmark]: Witness Printer took 3.10ms. Allocated memory is still 325.1MB. Free memory is still 153.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:27:46,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1342.55ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 61.5MB in the beginning and 61.0MB in the end (delta: 478.4kB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.23ms. Allocated memory is still 121.6MB. Free memory was 61.0MB in the beginning and 53.2MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.28ms. Allocated memory is still 121.6MB. Free memory was 52.6MB in the beginning and 47.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 927.78ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 47.8MB in the beginning and 68.3MB in the end (delta: -20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 25800.16ms. Allocated memory was 155.2MB in the beginning and 325.1MB in the end (delta: 169.9MB). Free memory was 68.3MB in the beginning and 153.8MB in the end (delta: -85.5MB). Peak memory consumption was 155.8MB. Max. memory is 16.1GB. * Witness Printer took 3.10ms. Allocated memory is still 325.1MB. Free memory is still 153.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of large string literal at line 7546, overapproximation of __builtin_umull_overflow at line 255, overapproximation of to_real at line -1. Possible FailurePath: [L2762-L2767] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7141] static __thread int tl_last_error = 0; [L7545-L7693] static struct aws_error_info errors[] = { [(AWS_ERROR_SUCCESS)-0x0000] = { .literal_name = "AWS_ERROR_SUCCESS", .error_code = (AWS_ERROR_SUCCESS), .error_str = ("Success."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SUCCESS" ", " "Success.", } , [(AWS_ERROR_OOM)-0x0000] = { .literal_name = "AWS_ERROR_OOM", .error_code = (AWS_ERROR_OOM), .error_str = ("Out of memory."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_OOM" ", " "Out of memory.", } , [(AWS_ERROR_UNKNOWN)-0x0000] = { .literal_name = "AWS_ERROR_UNKNOWN", .error_code = (AWS_ERROR_UNKNOWN), .error_str = ("Unknown error."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNKNOWN" ", " "Unknown error.", } , [(AWS_ERROR_SHORT_BUFFER)-0x0000] = { .literal_name = "AWS_ERROR_SHORT_BUFFER", .error_code = (AWS_ERROR_SHORT_BUFFER), .error_str = ("Buffer is not large enough to hold result."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SHORT_BUFFER" ", " "Buffer is not large enough to hold result.", } , [(AWS_ERROR_OVERFLOW_DETECTED)-0x0000] = { .literal_name = "AWS_ERROR_OVERFLOW_DETECTED", .error_code = (AWS_ERROR_OVERFLOW_DETECTED), .error_str = ("Fixed size value overflow was detected."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_OVERFLOW_DETECTED" ", " "Fixed size value overflow was detected.", } , [(AWS_ERROR_UNSUPPORTED_OPERATION)-0x0000] = { .literal_name = "AWS_ERROR_UNSUPPORTED_OPERATION", .error_code = (AWS_ERROR_UNSUPPORTED_OPERATION), .error_str = ("Unsupported operation."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNSUPPORTED_OPERATION" ", " "Unsupported operation.", } , [(AWS_ERROR_INVALID_BUFFER_SIZE)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_BUFFER_SIZE", .error_code = (AWS_ERROR_INVALID_BUFFER_SIZE), .error_str = ("Invalid buffer size."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_BUFFER_SIZE" ", " "Invalid buffer size.", } , [(AWS_ERROR_INVALID_HEX_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_HEX_STR", .error_code = (AWS_ERROR_INVALID_HEX_STR), .error_str = ("Invalid hex string."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_HEX_STR" ", " "Invalid hex string.", } , [(AWS_ERROR_INVALID_BASE64_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_BASE64_STR", .error_code = (AWS_ERROR_INVALID_BASE64_STR), .error_str = ("Invalid base64 string."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_BASE64_STR" ", " "Invalid base64 string.", } , [(AWS_ERROR_INVALID_INDEX)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_INDEX", .error_code = (AWS_ERROR_INVALID_INDEX), .error_str = ("Invalid index for list access."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_INDEX" ", " "Invalid index for list access.", } , [(AWS_ERROR_THREAD_INVALID_SETTINGS)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_INVALID_SETTINGS", .error_code = (AWS_ERROR_THREAD_INVALID_SETTINGS), .error_str = ("Invalid thread settings."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_INVALID_SETTINGS" ", " "Invalid thread settings.", } , [(AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE", .error_code = (AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE), .error_str = ("Insufficent resources for thread."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE" ", " "Insufficent resources for thread.", } , [(AWS_ERROR_THREAD_NO_PERMISSIONS)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NO_PERMISSIONS", .error_code = (AWS_ERROR_THREAD_NO_PERMISSIONS), .error_str = ("Insufficient permissions for thread operation."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NO_PERMISSIONS" ", " "Insufficient permissions for thread operation.", } , [(AWS_ERROR_THREAD_NOT_JOINABLE)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NOT_JOINABLE", .error_code = (AWS_ERROR_THREAD_NOT_JOINABLE), .error_str = ("Thread not joinable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NOT_JOINABLE" ", " "Thread not joinable.", } , [(AWS_ERROR_THREAD_NO_SUCH_THREAD_ID)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NO_SUCH_THREAD_ID", .error_code = (AWS_ERROR_THREAD_NO_SUCH_THREAD_ID), .error_str = ("No such thread ID."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NO_SUCH_THREAD_ID" ", " "No such thread ID.", } , [(AWS_ERROR_THREAD_DEADLOCK_DETECTED)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_DEADLOCK_DETECTED", .error_code = (AWS_ERROR_THREAD_DEADLOCK_DETECTED), .error_str = ("Deadlock detected in thread."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_DEADLOCK_DETECTED" ", " "Deadlock detected in thread.", } , [(AWS_ERROR_MUTEX_NOT_INIT)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_NOT_INIT", .error_code = (AWS_ERROR_MUTEX_NOT_INIT), .error_str = ("Mutex not initialized."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_NOT_INIT" ", " "Mutex not initialized.", } , [(AWS_ERROR_MUTEX_TIMEOUT)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_TIMEOUT", .error_code = (AWS_ERROR_MUTEX_TIMEOUT), .error_str = ("Mutex operation timed out."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_TIMEOUT" ", " "Mutex operation timed out.", } , [(AWS_ERROR_MUTEX_CALLER_NOT_OWNER)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_CALLER_NOT_OWNER", .error_code = (AWS_ERROR_MUTEX_CALLER_NOT_OWNER), .error_str = ("The caller of a mutex operation was not the owner."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_CALLER_NOT_OWNER" ", " "The caller of a mutex operation was not the owner.", } , [(AWS_ERROR_MUTEX_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_FAILED", .error_code = (AWS_ERROR_MUTEX_FAILED), .error_str = ("Mutex operation failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_FAILED" ", " "Mutex operation failed.", } , [(AWS_ERROR_COND_VARIABLE_INIT_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_INIT_FAILED", .error_code = (AWS_ERROR_COND_VARIABLE_INIT_FAILED), .error_str = ("Condition variable initialization failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_INIT_FAILED" ", " "Condition variable initialization failed.", } , [(AWS_ERROR_COND_VARIABLE_TIMED_OUT)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_TIMED_OUT", .error_code = (AWS_ERROR_COND_VARIABLE_TIMED_OUT), .error_str = ("Condition variable wait timed out."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_TIMED_OUT" ", " "Condition variable wait timed out.", } , [(AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN", .error_code = (AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN), .error_str = ("Condition variable unknown error."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN" ", " "Condition variable unknown error.", } , [(AWS_ERROR_CLOCK_FAILURE)-0x0000] = { .literal_name = "AWS_ERROR_CLOCK_FAILURE", .error_code = (AWS_ERROR_CLOCK_FAILURE), .error_str = ("Clock operation failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_CLOCK_FAILURE" ", " "Clock operation failed.", } , [(AWS_ERROR_LIST_EMPTY)-0x0000] = { .literal_name = "AWS_ERROR_LIST_EMPTY", .error_code = (AWS_ERROR_LIST_EMPTY), .error_str = ("Empty list."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_EMPTY" ", " "Empty list.", } , [(AWS_ERROR_DEST_COPY_TOO_SMALL)-0x0000] = { .literal_name = "AWS_ERROR_DEST_COPY_TOO_SMALL", .error_code = (AWS_ERROR_DEST_COPY_TOO_SMALL), .error_str = ("Destination of copy is too small."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_DEST_COPY_TOO_SMALL" ", " "Destination of copy is too small.", } , [(AWS_ERROR_LIST_EXCEEDS_MAX_SIZE)-0x0000] = { .literal_name = "AWS_ERROR_LIST_EXCEEDS_MAX_SIZE", .error_code = (AWS_ERROR_LIST_EXCEEDS_MAX_SIZE), .error_str = ("A requested operation on a list would exceed it's max size."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_EXCEEDS_MAX_SIZE" ", " "A requested operation on a list would exceed it's max size.", } , [(AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK)-0x0000] = { .literal_name = "AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK", .error_code = (AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK), .error_str = ("Attempt to shrink a list in static mode."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK" ", " "Attempt to shrink a list in static mode.", } , [(AWS_ERROR_PRIORITY_QUEUE_FULL)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_FULL", .error_code = (AWS_ERROR_PRIORITY_QUEUE_FULL), .error_str = ("Attempt to add items to a full preallocated queue in static mode."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_FULL" ", " "Attempt to add items to a full preallocated queue in static mode.", } , [(AWS_ERROR_PRIORITY_QUEUE_EMPTY)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_EMPTY", .error_code = (AWS_ERROR_PRIORITY_QUEUE_EMPTY), .error_str = ("Attempt to pop an item from an empty queue."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_EMPTY" ", " "Attempt to pop an item from an empty queue.", } , [(AWS_ERROR_PRIORITY_QUEUE_BAD_NODE)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_BAD_NODE", .error_code = (AWS_ERROR_PRIORITY_QUEUE_BAD_NODE), .error_str = ("Bad node handle passed to remove."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_BAD_NODE" ", " "Bad node handle passed to remove.", } , [(AWS_ERROR_HASHTBL_ITEM_NOT_FOUND)-0x0000] = { .literal_name = "AWS_ERROR_HASHTBL_ITEM_NOT_FOUND", .error_code = (AWS_ERROR_HASHTBL_ITEM_NOT_FOUND), .error_str = ("Item not found in hash table."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_HASHTBL_ITEM_NOT_FOUND" ", " "Item not found in hash table.", } , [(AWS_ERROR_INVALID_DATE_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_DATE_STR", .error_code = (AWS_ERROR_INVALID_DATE_STR), .error_str = ("Date string is invalid and cannot be parsed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_DATE_STR" ", " "Date string is invalid and cannot be parsed.", } , [(AWS_ERROR_INVALID_ARGUMENT)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_ARGUMENT", .error_code = (AWS_ERROR_INVALID_ARGUMENT), .error_str = ("An invalid argument was passed to a function."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_ARGUMENT" ", " "An invalid argument was passed to a function.", } , [(AWS_ERROR_RANDOM_GEN_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_RANDOM_GEN_FAILED", .error_code = (AWS_ERROR_RANDOM_GEN_FAILED), .error_str = ("A call to the random number generator failed. Retry later."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_RANDOM_GEN_FAILED" ", " "A call to the random number generator failed. Retry later.", } , [(AWS_ERROR_MALFORMED_INPUT_STRING)-0x0000] = { .literal_name = "AWS_ERROR_MALFORMED_INPUT_STRING", .error_code = (AWS_ERROR_MALFORMED_INPUT_STRING), .error_str = ("An input string was passed to a parser and the string was incorrectly formatted."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MALFORMED_INPUT_STRING" ", " "An input string was passed to a parser and the string was incorrectly formatted.", } , [(AWS_ERROR_UNIMPLEMENTED)-0x0000] = { .literal_name = "AWS_ERROR_UNIMPLEMENTED", .error_code = (AWS_ERROR_UNIMPLEMENTED), .error_str = ("A function was called, but is not implemented."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNIMPLEMENTED" ", " "A function was called, but is not implemented.", } , [(AWS_ERROR_INVALID_STATE)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_STATE", .error_code = (AWS_ERROR_INVALID_STATE), .error_str = ("An invalid state was encountered."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_STATE" ", " "An invalid state was encountered.", } , [(AWS_ERROR_ENVIRONMENT_GET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_GET", .error_code = (AWS_ERROR_ENVIRONMENT_GET), .error_str = ("System call failure when getting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_GET" ", " "System call failure when getting an environment variable.", } , [(AWS_ERROR_ENVIRONMENT_SET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_SET", .error_code = (AWS_ERROR_ENVIRONMENT_SET), .error_str = ("System call failure when setting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_SET" ", " "System call failure when setting an environment variable.", } , [(AWS_ERROR_ENVIRONMENT_UNSET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_UNSET", .error_code = (AWS_ERROR_ENVIRONMENT_UNSET), .error_str = ("System call failure when unsetting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_UNSET" ", " "System call failure when unsetting an environment variable.", } , [(AWS_ERROR_SYS_CALL_FAILURE)-0x0000] = { .literal_name = "AWS_ERROR_SYS_CALL_FAILURE", .error_code = (AWS_ERROR_SYS_CALL_FAILURE), .error_str = ("System call failure"), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SYS_CALL_FAILURE" ", " "System call failure", } , [(AWS_ERROR_FILE_INVALID_PATH)-0x0000] = { .literal_name = "AWS_ERROR_FILE_INVALID_PATH", .error_code = (AWS_ERROR_FILE_INVALID_PATH), .error_str = ("Invalid file path."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_FILE_INVALID_PATH" ", " "Invalid file path.", } , [(AWS_ERROR_MAX_FDS_EXCEEDED)-0x0000] = { .literal_name = "AWS_ERROR_MAX_FDS_EXCEEDED", .error_code = (AWS_ERROR_MAX_FDS_EXCEEDED), .error_str = ("The maximum number of fds has been exceeded."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MAX_FDS_EXCEEDED" ", " "The maximum number of fds has been exceeded.", } , [(AWS_ERROR_NO_PERMISSION)-0x0000] = { .literal_name = "AWS_ERROR_NO_PERMISSION", .error_code = (AWS_ERROR_NO_PERMISSION), .error_str = ("User does not have permission to perform the requested action."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_NO_PERMISSION" ", " "User does not have permission to perform the requested action.", } , [(AWS_ERROR_STREAM_UNSEEKABLE)-0x0000] = { .literal_name = "AWS_ERROR_STREAM_UNSEEKABLE", .error_code = (AWS_ERROR_STREAM_UNSEEKABLE), .error_str = ("Stream does not support seek operations"), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_STREAM_UNSEEKABLE" ", " "Stream does not support seek operations", } , }; [L7696-L7699] static struct aws_error_info_list s_list = { .error_list = errors, .count = (sizeof(errors) / sizeof((errors)[0])), }; [L7701-L7710] static struct aws_log_subject_info s_common_log_subject_infos[] = { { .subject_id = (AWS_LS_COMMON_GENERAL), .subject_name = ("aws-c-common"), .subject_description = ("Subject for aws-c-common logging that doesn't belong to any particular category") } , { .subject_id = (AWS_LS_COMMON_TASK_SCHEDULER), .subject_name = ("task-scheduler"), .subject_description = ("Subject for task scheduler or task specific logging.") } , }; [L7712-L7715] static struct aws_log_subject_info_list s_common_log_subject_list = { .subject_list = s_common_log_subject_infos, .count = (sizeof(s_common_log_subject_infos) / sizeof((s_common_log_subject_infos)[0])), }; [L7717-L7721] static _Bool s_common_library_initialized = 0 ; [L7748] CALL aws_array_list_clean_up_harness() [L7735] struct aws_array_list list = {0, __VERIFIER_nondet_ulong(), __VERIFIER_nondet_ulong(), __VERIFIER_nondet_ulong(), 0}; [L7738] CALL, EXPR aws_array_list_is_bounded(&list, 9223372036854775808U, 2) [L7005] EXPR list->item_size [L7004-L7005] _Bool item_size_is_bounded = list->item_size <= max_item_size; [L7008] EXPR list->length [L7007-L7008] _Bool length_is_bounded = list->length <= max_initial_item_allocation; [L7009] return item_size_is_bounded && length_is_bounded; [L7738] RET, EXPR aws_array_list_is_bounded(&list, 9223372036854775808U, 2) [L7738] CALL assume_abort_if_not(aws_array_list_is_bounded(&list, 9223372036854775808U, 2)) [L211] COND FALSE !(!cond) [L7738] RET assume_abort_if_not(aws_array_list_is_bounded(&list, 9223372036854775808U, 2)) [L7739] CALL ensure_array_list_has_allocated_data_member(&list) [L7013] EXPR list->current_size [L7013] list->current_size == 0 && list->length == 0 [L7013] EXPR list->length [L7013] list->current_size == 0 && list->length == 0 [L7013] COND TRUE list->current_size == 0 && list->length == 0 [L7014] EXPR list->data [L7014-L7016] CALL assume_abort_if_not(list->data == ((void *)0) ) [L211] COND FALSE !(!cond) [L7014-L7016] RET assume_abort_if_not(list->data == ((void *)0) ) [L7017] CALL, EXPR can_fail_allocator() [L2786] return &s_can_fail_allocator_static; [L7017] RET, EXPR can_fail_allocator() [L7017] list->alloc = can_fail_allocator() [L7739] RET ensure_array_list_has_allocated_data_member(&list) [L7740] CALL, EXPR aws_array_list_is_valid(&list) [L3263] COND FALSE !(!list) [L3268] size_t required_size = 0; [L3272] EXPR list->length [L3272] EXPR list->item_size [L3272] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2588] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2496] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2496] RET __CPROVER_overflow_mult(a, b) [L2496] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2498] *r = a * b [L2499] return (0); [L2588] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2588] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L3272] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L3270-L3272] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L3275] EXPR list->current_size [L3275] EXPR \read(required_size) [L3274-L3275] _Bool current_size_is_valid = (list->current_size >= required_size); [L3279] EXPR list->current_size [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279] EXPR list->data [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279-L3281] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L3277-L3281] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L3284] EXPR list->item_size [L3283-L3284] _Bool item_size_is_valid = (list->item_size != 0); [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3268] size_t required_size = 0; [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L7740] RET, EXPR aws_array_list_is_valid(&list) [L7740] CALL assume_abort_if_not(aws_array_list_is_valid(&list)) [L211] COND FALSE !(!cond) [L7740] RET assume_abort_if_not(aws_array_list_is_valid(&list)) [L7743] CALL aws_array_list_clean_up(&list) [L3302] CALL, EXPR aws_is_mem_zeroed(&(*list), sizeof(*list)) [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND TRUE buf_u8[i] [L2339-L2341] return 0 ; [L3302] RET, EXPR aws_is_mem_zeroed(&(*list), sizeof(*list)) [L3302] EXPR aws_is_mem_zeroed(&(*list), sizeof(*list)) || aws_array_list_is_valid(list) [L3302] CALL, EXPR aws_array_list_is_valid(list) [L3263] COND FALSE !(!list) [L3268] size_t required_size = 0; [L3272] EXPR list->length [L3272] EXPR list->item_size [L3272] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2588] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2496] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2496] RET __CPROVER_overflow_mult(a, b) [L2496] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2498] *r = a * b [L2499] return (0); [L2588] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2588] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L3272] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L3270-L3272] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L3275] EXPR list->current_size [L3275] EXPR \read(required_size) [L3274-L3275] _Bool current_size_is_valid = (list->current_size >= required_size); [L3279] EXPR list->current_size [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279] EXPR list->data [L3279-L3280] EXPR list->current_size == 0 && list->data == ((void *)0) [L3279-L3281] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L3277-L3281] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L3284] EXPR list->item_size [L3283-L3284] _Bool item_size_is_valid = (list->item_size != 0); [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3268] size_t required_size = 0; [L3285] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L3302] RET, EXPR aws_array_list_is_valid(list) [L3302] EXPR aws_is_mem_zeroed(&(*list), sizeof(*list)) || aws_array_list_is_valid(list) [L3302] CALL assume_abort_if_not((aws_is_mem_zeroed(&(*list), sizeof(*list)) || aws_array_list_is_valid(list))) [L211] COND FALSE !(!cond) [L3302] RET assume_abort_if_not((aws_is_mem_zeroed(&(*list), sizeof(*list)) || aws_array_list_is_valid(list))) [L3303] EXPR list->alloc [L3303] list->alloc && list->data [L3303] EXPR list->data [L3303] list->alloc && list->data [L3303] COND FALSE !(list->alloc && list->data) [L3307] FCALL memset(&(*list), 0, sizeof(*list)) [L7743] RET aws_array_list_clean_up(&list) [L7746] CALL, EXPR aws_is_mem_zeroed(&(list), sizeof(list)) [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] [L2338] COND TRUE buf_u8[i] [L2339-L2341] return 0 ; [L7746] RET, EXPR aws_is_mem_zeroed(&(list), sizeof(list)) [L7746] CALL __VERIFIER_assert(aws_is_mem_zeroed(&(list), sizeof(list))) [L223] COND TRUE !cond [L223] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.7s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 756 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 693 mSDsluCounter, 12855 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1465 IncrementalHoareTripleChecker+Unchecked, 10874 mSDsCounter, 237 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2919 IncrementalHoareTripleChecker+Invalid, 4621 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 237 mSolverCounterUnsat, 1981 mSDtfsCounter, 2919 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1970 GetRequests, 1758 SyntacticMatches, 5 SemanticMatches, 207 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=10, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 83 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 1640 NumberOfCodeBlocks, 1632 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2043 ConstructedInterpolants, 62 QuantifiedInterpolants, 7269 SizeOfPredicates, 136 NumberOfNonLiveVariables, 33659 ConjunctsInSsa, 543 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 842/917 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 15:27:46,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/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_array_list_clean_up_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:27:48,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:27:48,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:27:48,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:27:48,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:27:48,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:27:48,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:27:48,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:27:48,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:27:48,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:27:48,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:27:48,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:27:48,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:27:48,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:27:48,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:27:48,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:27:48,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:27:48,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:27:48,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:27:48,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:27:48,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:27:48,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:27:48,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:27:48,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:27:48,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:27:48,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:27:48,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:27:48,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:27:48,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:27:48,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:27:48,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:27:48,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:27:48,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:27:48,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:27:48,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:27:48,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:27:48,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:27:48,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:27:48,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:27:48,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:27:48,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:27:48,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-21 15:27:48,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:27:48,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:27:48,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:27:48,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:27:48,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:27:48,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:27:48,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:27:48,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:27:48,514 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:27:48,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:27:48,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:27:48,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:27:48,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:27:48,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:27:48,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 15:27:48,515 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 15:27:48,516 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 15:27:48,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:27:48,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:27:48,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:27:48,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:27:48,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:27:48,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:27:48,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:27:48,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:27:48,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:27:48,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:27:48,517 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 15:27:48,517 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 15:27:48,518 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:27:48,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:27:48,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:27:48,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:27:48,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 15:27:48,518 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2021-12-21 15:27:48,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:27:48,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:27:48,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:27:48,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:27:48,796 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:27:48,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-12-21 15:27:48,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e390cf16/6c011e40cc0142bb94eb3fe367396791/FLAG4bb7591a1 [2021-12-21 15:27:49,445 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:27:49,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2021-12-21 15:27:49,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e390cf16/6c011e40cc0142bb94eb3fe367396791/FLAG4bb7591a1 [2021-12-21 15:27:49,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e390cf16/6c011e40cc0142bb94eb3fe367396791 [2021-12-21 15:27:49,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:27:49,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:27:49,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:27:49,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:27:49,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:27:49,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:49" (1/1) ... [2021-12-21 15:27:49,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd5c548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:49, skipping insertion in model container [2021-12-21 15:27:49,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:49" (1/1) ... [2021-12-21 15:27:49,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:27:49,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:27:49,940 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_array_list_clean_up_harness.i[4497,4510] [2021-12-21 15:27:49,946 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_array_list_clean_up_harness.i[4557,4570] [2021-12-21 15:27:50,331 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:27:50,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,370 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,373 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,383 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,385 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,387 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,387 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,388 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,390 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:27:50,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:27:50,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:27:50,595 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:27:50,598 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:27:50,599 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:27:50,600 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:27:50,601 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:27:50,604 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:27:50,606 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:27:50,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,674 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:27:50,733 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-21 15:27:50,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:27:50,754 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_array_list_clean_up_harness.i[4497,4510] [2021-12-21 15:27:50,754 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_array_list_clean_up_harness.i[4557,4570] [2021-12-21 15:27:50,778 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:27:50,800 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,801 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,801 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,801 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,802 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,807 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,807 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,828 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:27:50,829 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:27:50,830 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:27:50,830 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:27:50,834 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:27:50,834 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:27:50,834 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:27:50,834 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:27:50,835 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:27:50,835 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:27:50,848 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:27:50,898 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:27:50,906 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_array_list_clean_up_harness.i[4497,4510] [2021-12-21 15:27:50,906 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_array_list_clean_up_harness.i[4557,4570] [2021-12-21 15:27:50,946 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:27:50,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:50,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:51,013 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:27:51,013 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:27:51,014 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:27:51,014 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:27:51,015 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:27:51,015 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:27:51,015 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:27:51,016 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:27:51,016 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:27:51,017 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:27:51,032 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:51,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:27:51,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:27:51,302 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:27:51,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51 WrapperNode [2021-12-21 15:27:51,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:27:51,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:27:51,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:27:51,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:27:51,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,419 INFO L137 Inliner]: procedures = 710, calls = 1553, calls flagged for inlining = 48, calls inlined = 7, statements flattened = 576 [2021-12-21 15:27:51,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:27:51,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:27:51,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:27:51,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:27:51,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:27:51,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:27:51,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:27:51,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:27:51,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (1/1) ... [2021-12-21 15:27:51,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:27:51,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:27:51,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:27:51,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:27:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-21 15:27:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-21 15:27:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:27:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-21 15:27:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-21 15:27:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-21 15:27:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-21 15:27:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:27:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:27:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 15:27:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-21 15:27:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-21 15:27:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:27:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:27:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:27:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:27:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:27:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:27:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:27:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:27:51,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:27:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:27:51,579 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:27:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-21 15:27:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-21 15:27:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-21 15:27:51,580 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-21 15:27:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-21 15:27:51,580 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-21 15:27:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 15:27:51,581 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 15:27:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:27:51,583 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:27:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:27:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:27:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-21 15:27:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:27:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:27:51,584 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:27:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-21 15:27:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-21 15:27:51,833 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:27:51,834 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:27:52,704 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:27:52,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:27:52,708 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 15:27:52,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:52 BoogieIcfgContainer [2021-12-21 15:27:52,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:27:52,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:27:52,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:27:52,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:27:52,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:27:49" (1/3) ... [2021-12-21 15:27:52,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713ef66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:52, skipping insertion in model container [2021-12-21 15:27:52,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:51" (2/3) ... [2021-12-21 15:27:52,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713ef66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:52, skipping insertion in model container [2021-12-21 15:27:52,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:52" (3/3) ... [2021-12-21 15:27:52,714 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2021-12-21 15:27:52,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:27:52,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:27:52,744 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:27:52,747 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:27:52,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:27:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-21 15:27:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 15:27:52,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:52,763 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:52,763 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:52,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash 213945854, now seen corresponding path program 1 times [2021-12-21 15:27:52,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:27:52,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595944077] [2021-12-21 15:27:52,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:52,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:27:52,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:27:52,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:27:52,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 15:27:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 15:27:53,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 15:27:53,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:53,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:27:53,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595944077] [2021-12-21 15:27:53,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595944077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:53,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:53,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:27:53,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724064744] [2021-12-21 15:27:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:53,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:27:53,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:27:53,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:27:53,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:27:53,410 INFO L87 Difference]: Start difference. First operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 15:27:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:53,433 INFO L93 Difference]: Finished difference Result 221 states and 288 transitions. [2021-12-21 15:27:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:27:53,434 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-12-21 15:27:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:53,440 INFO L225 Difference]: With dead ends: 221 [2021-12-21 15:27:53,440 INFO L226 Difference]: Without dead ends: 107 [2021-12-21 15:27:53,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:27:53,449 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:53,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-21 15:27:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-12-21 15:27:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-21 15:27:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2021-12-21 15:27:53,484 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 65 [2021-12-21 15:27:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:53,484 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2021-12-21 15:27:53,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 15:27:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2021-12-21 15:27:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 15:27:53,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:53,487 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:53,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:53,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:27:53,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1475951998, now seen corresponding path program 1 times [2021-12-21 15:27:53,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:27:53,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279268551] [2021-12-21 15:27:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:53,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:27:53,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:27:53,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:27:53,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 15:27:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:54,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:27:54,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 15:27:54,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:54,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:27:54,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279268551] [2021-12-21 15:27:54,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279268551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:54,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:54,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:27:54,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300102309] [2021-12-21 15:27:54,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:54,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:27:54,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:27:54,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:27:54,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:27:54,391 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 15:27:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:54,532 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2021-12-21 15:27:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:27:54,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2021-12-21 15:27:54,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:54,537 INFO L225 Difference]: With dead ends: 182 [2021-12-21 15:27:54,537 INFO L226 Difference]: Without dead ends: 109 [2021-12-21 15:27:54,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:27:54,538 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 35 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:54,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 423 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:27:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-21 15:27:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-12-21 15:27:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 74 states have internal predecessors, (88), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-21 15:27:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-12-21 15:27:54,546 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 71 [2021-12-21 15:27:54,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:54,546 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-12-21 15:27:54,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 15:27:54,546 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2021-12-21 15:27:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 15:27:54,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:54,548 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:54,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:54,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:27:54,763 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1492369144, now seen corresponding path program 1 times [2021-12-21 15:27:54,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:27:54,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661314721] [2021-12-21 15:27:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:54,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:27:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:27:54,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:27:54,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 15:27:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:55,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:27:55,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 15:27:55,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:55,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:27:55,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661314721] [2021-12-21 15:27:55,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661314721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:55,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:55,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:27:55,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206419567] [2021-12-21 15:27:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:55,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:27:55,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:27:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:27:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:27:55,529 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:55,584 INFO L93 Difference]: Finished difference Result 189 states and 231 transitions. [2021-12-21 15:27:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:27:55,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-12-21 15:27:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:55,588 INFO L225 Difference]: With dead ends: 189 [2021-12-21 15:27:55,588 INFO L226 Difference]: Without dead ends: 114 [2021-12-21 15:27:55,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:27:55,589 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 10 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 377 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 [2021-12-21 15:27:55,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 377 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-21 15:27:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2021-12-21 15:27:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.2) internal successors, (90), 76 states have internal predecessors, (90), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-21 15:27:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2021-12-21 15:27:55,596 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 86 [2021-12-21 15:27:55,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:55,596 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2021-12-21 15:27:55,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2021-12-21 15:27:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 15:27:55,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:55,598 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:55,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:55,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:27:55,820 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:55,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:55,820 INFO L85 PathProgramCache]: Analyzing trace with hash 874325450, now seen corresponding path program 1 times [2021-12-21 15:27:55,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:27:55,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054301319] [2021-12-21 15:27:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:55,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:27:55,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:27:55,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:27:55,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 15:27:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:56,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:27:56,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 15:27:56,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:56,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:27:56,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054301319] [2021-12-21 15:27:56,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054301319] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:56,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:56,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:27:56,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969843277] [2021-12-21 15:27:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:56,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:27:56,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:27:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:27:56,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:27:56,712 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:56,765 INFO L93 Difference]: Finished difference Result 193 states and 233 transitions. [2021-12-21 15:27:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:27:56,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-12-21 15:27:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:56,767 INFO L225 Difference]: With dead ends: 193 [2021-12-21 15:27:56,767 INFO L226 Difference]: Without dead ends: 116 [2021-12-21 15:27:56,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:27:56,768 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:56,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 370 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-21 15:27:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2021-12-21 15:27:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-21 15:27:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2021-12-21 15:27:56,774 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 86 [2021-12-21 15:27:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:56,774 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2021-12-21 15:27:56,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2021-12-21 15:27:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 15:27:56,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:56,776 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:56,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:56,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:27:56,987 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 261547704, now seen corresponding path program 1 times [2021-12-21 15:27:56,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:27:56,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404409068] [2021-12-21 15:27:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:56,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:27:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:27:56,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:27:56,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 15:27:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:57,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:27:57,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 15:27:57,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:27:57,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:27:57,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404409068] [2021-12-21 15:27:57,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404409068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:27:57,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:27:57,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:27:57,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520494344] [2021-12-21 15:27:57,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:27:57,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:27:57,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:27:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:27:57,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:27:57,778 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:57,804 INFO L93 Difference]: Finished difference Result 160 states and 195 transitions. [2021-12-21 15:27:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:27:57,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-12-21 15:27:57,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:57,805 INFO L225 Difference]: With dead ends: 160 [2021-12-21 15:27:57,805 INFO L226 Difference]: Without dead ends: 120 [2021-12-21 15:27:57,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:27:57,806 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 4 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:57,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 515 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:27:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-21 15:27:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2021-12-21 15:27:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 80 states have internal predecessors, (94), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-21 15:27:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2021-12-21 15:27:57,812 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 86 [2021-12-21 15:27:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:57,812 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2021-12-21 15:27:57,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:27:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2021-12-21 15:27:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-21 15:27:57,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:57,813 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 15:27:57,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:27:58,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:27:58,038 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2061885074, now seen corresponding path program 1 times [2021-12-21 15:27:58,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:27:58,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013457872] [2021-12-21 15:27:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:58,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:27:58,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:27:58,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:27:58,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-21 15:27:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:27:58,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 15:27:58,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:27:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 15:27:58,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:27:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 15:27:59,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:27:59,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013457872] [2021-12-21 15:27:59,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013457872] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:27:59,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:27:59,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-21 15:27:59,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986934339] [2021-12-21 15:27:59,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:27:59,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:27:59,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:27:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:27:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:27:59,155 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 15:27:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:27:59,365 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2021-12-21 15:27:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:27:59,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 89 [2021-12-21 15:27:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:27:59,366 INFO L225 Difference]: With dead ends: 214 [2021-12-21 15:27:59,366 INFO L226 Difference]: Without dead ends: 131 [2021-12-21 15:27:59,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:27:59,367 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 28 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:27:59,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 743 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:27:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-21 15:27:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2021-12-21 15:27:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 89 states have internal predecessors, (106), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-21 15:27:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 152 transitions. [2021-12-21 15:27:59,373 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 152 transitions. Word has length 89 [2021-12-21 15:27:59,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:27:59,374 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 152 transitions. [2021-12-21 15:27:59,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 15:27:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 152 transitions. [2021-12-21 15:27:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-21 15:27:59,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:27:59,375 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:27:59,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-21 15:27:59,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:27:59,586 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:27:59,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:27:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -932359201, now seen corresponding path program 1 times [2021-12-21 15:27:59,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:27:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037426230] [2021-12-21 15:27:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:27:59,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:27:59,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:27:59,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:27:59,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-21 15:28:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:00,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:28:00,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 15:28:00,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:28:00,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:28:00,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037426230] [2021-12-21 15:28:00,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037426230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:00,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:28:00,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:28:00,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765905262] [2021-12-21 15:28:00,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:00,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:28:00,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:28:00,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:28:00,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:28:00,450 INFO L87 Difference]: Start difference. First operand 125 states and 152 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:28:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:00,616 INFO L93 Difference]: Finished difference Result 177 states and 214 transitions. [2021-12-21 15:28:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:28:00,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 92 [2021-12-21 15:28:00,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:00,618 INFO L225 Difference]: With dead ends: 177 [2021-12-21 15:28:00,618 INFO L226 Difference]: Without dead ends: 123 [2021-12-21 15:28:00,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:28:00,619 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 46 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:00,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 515 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:28:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-21 15:28:00,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-21 15:28:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 87 states have internal predecessors, (104), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-21 15:28:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2021-12-21 15:28:00,625 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 92 [2021-12-21 15:28:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:00,626 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2021-12-21 15:28:00,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:28:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2021-12-21 15:28:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-21 15:28:00,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:00,627 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:28:00,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:28:00,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:28:00,836 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -778390853, now seen corresponding path program 1 times [2021-12-21 15:28:00,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:28:00,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205806597] [2021-12-21 15:28:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:00,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:28:00,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:28:00,838 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:28:00,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-21 15:28:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:01,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:28:01,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-21 15:28:01,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:28:01,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:28:01,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205806597] [2021-12-21 15:28:01,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205806597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:28:01,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:28:01,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:28:01,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624402658] [2021-12-21 15:28:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:28:01,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:28:01,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:28:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:28:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:28:01,779 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:28:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:01,812 INFO L93 Difference]: Finished difference Result 154 states and 185 transitions. [2021-12-21 15:28:01,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:28:01,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2021-12-21 15:28:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:01,813 INFO L225 Difference]: With dead ends: 154 [2021-12-21 15:28:01,813 INFO L226 Difference]: Without dead ends: 124 [2021-12-21 15:28:01,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:28:01,814 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 2 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:01,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 379 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:28:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-21 15:28:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-21 15:28:01,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 88 states have internal predecessors, (105), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-21 15:28:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2021-12-21 15:28:01,820 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 107 [2021-12-21 15:28:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:01,821 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2021-12-21 15:28:01,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:28:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2021-12-21 15:28:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 15:28:01,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:01,822 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:28:01,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-21 15:28:02,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:28:02,029 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:02,030 INFO L85 PathProgramCache]: Analyzing trace with hash 99295452, now seen corresponding path program 1 times [2021-12-21 15:28:02,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:28:02,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36862868] [2021-12-21 15:28:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:28:02,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:28:02,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:28:02,032 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:28:02,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-21 15:28:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:28:02,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:28:02,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-21 15:28:03,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:28:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-21 15:28:03,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:28:03,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36862868] [2021-12-21 15:28:03,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36862868] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:28:03,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:28:03,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-21 15:28:03,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363094722] [2021-12-21 15:28:03,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:28:03,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:28:03,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:28:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:28:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:28:03,223 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 15:28:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:03,326 INFO L93 Difference]: Finished difference Result 159 states and 192 transitions. [2021-12-21 15:28:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:28:03,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2021-12-21 15:28:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:03,327 INFO L225 Difference]: With dead ends: 159 [2021-12-21 15:28:03,328 INFO L226 Difference]: Without dead ends: 127 [2021-12-21 15:28:03,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:28:03,328 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:03,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 382 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:28:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-21 15:28:03,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-12-21 15:28:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 91 states have internal predecessors, (108), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-21 15:28:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2021-12-21 15:28:03,333 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 108 [2021-12-21 15:28:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:03,334 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2021-12-21 15:28:03,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 15:28:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2021-12-21 15:28:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 15:28:03,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:03,335 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:28:03,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-21 15:28:03,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:28:03,551 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1722436869, now seen corresponding path program 2 times [2021-12-21 15:28:03,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:28:03,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267322384] [2021-12-21 15:28:03,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:28:03,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:28:03,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:28:03,554 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:28:03,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-21 15:28:06,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:28:06,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:28:06,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:28:06,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:28:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-21 15:28:07,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:28:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-21 15:28:07,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:28:07,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267322384] [2021-12-21 15:28:07,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267322384] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:28:07,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:28:07,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-21 15:28:07,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412926467] [2021-12-21 15:28:07,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:28:07,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:28:07,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:28:07,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:28:07,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:28:07,416 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 15:28:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:28:07,906 INFO L93 Difference]: Finished difference Result 165 states and 201 transitions. [2021-12-21 15:28:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:28:07,906 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2021-12-21 15:28:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:28:07,907 INFO L225 Difference]: With dead ends: 165 [2021-12-21 15:28:07,907 INFO L226 Difference]: Without dead ends: 133 [2021-12-21 15:28:07,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:28:07,908 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 30 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:28:07,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 760 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:28:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-21 15:28:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-21 15:28:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-21 15:28:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 159 transitions. [2021-12-21 15:28:07,912 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 159 transitions. Word has length 111 [2021-12-21 15:28:07,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:28:07,912 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 159 transitions. [2021-12-21 15:28:07,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 15:28:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 159 transitions. [2021-12-21 15:28:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 15:28:07,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:28:07,914 INFO L514 BasicCegarLoop]: trace histogram [10, 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] [2021-12-21 15:28:07,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:28:08,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:28:08,134 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:28:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:28:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash 699283291, now seen corresponding path program 3 times [2021-12-21 15:28:08,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:28:08,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862023761] [2021-12-21 15:28:08,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:28:08,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:28:08,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:28:08,137 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 15:28:08,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process