./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_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 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:12:53,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:12:53,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:12:53,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:12:53,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:12:53,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:12:53,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:12:53,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:12:53,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:12:53,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:12:53,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:12:53,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:12:53,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:12:53,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:12:53,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:12:53,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:12:53,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:12:53,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:12:53,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:12:53,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:12:53,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:12:53,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:12:53,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:12:53,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:12:53,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:12:53,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:12:53,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:12:53,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:12:53,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:12:53,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:12:53,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:12:53,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:12:53,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:12:53,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:12:53,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:12:53,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:12:53,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:12:53,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:12:53,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:12:53,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:12:53,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:12:53,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:12:53,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:12:53,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:12:53,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:12:53,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:12:53,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:12:53,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:12:53,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:12:53,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:12:53,449 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:12:53,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:12:53,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:12:53,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:12:53,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:12:53,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:12:53,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:12:53,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:12:53,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:12:53,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:12:53,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:12:53,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:12:53,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:12:53,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:12:53,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:12:53,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:12:53,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:12:53,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:12:53,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:12:53,460 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:12:53,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:12:53,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:12:53,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2021-12-28 03:12:53,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:12:53,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:12:53,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:12:53,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:12:53,719 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:12:53,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-12-28 03:12:53,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaa3651a/1617e9b703cc41d582076a07ef837908/FLAG9e8d7f324 [2021-12-28 03:12:54,377 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:12:54,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-12-28 03:12:54,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaa3651a/1617e9b703cc41d582076a07ef837908/FLAG9e8d7f324 [2021-12-28 03:12:54,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efaa3651a/1617e9b703cc41d582076a07ef837908 [2021-12-28 03:12:54,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:12:54,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:12:54,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:12:54,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:12:54,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:12:54,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:12:54" (1/1) ... [2021-12-28 03:12:54,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a5b930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:54, skipping insertion in model container [2021-12-28 03:12:54,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:12:54" (1/1) ... [2021-12-28 03:12:54,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:12:54,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:12:55,055 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_pop_back_harness.i[4497,4510] [2021-12-28 03:12:55,060 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_pop_back_harness.i[4557,4570] [2021-12-28 03:12:55,505 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:12:55,564 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,565 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,565 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,573 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,596 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,864 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:12:55,867 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:12:55,868 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:12:55,868 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:12:55,869 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:12:55,870 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:12:55,870 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:12:55,870 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:12:55,872 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:12:55,872 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:12:55,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:55,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:12:56,005 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:12:56,022 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_pop_back_harness.i[4497,4510] [2021-12-28 03:12:56,023 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_pop_back_harness.i[4557,4570] [2021-12-28 03:12:56,097 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:12:56,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,116 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,126 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,126 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,157 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:12:56,158 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:12:56,158 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:12:56,159 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:12:56,160 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:12:56,161 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:12:56,161 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:12:56,161 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:12:56,162 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:12:56,162 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:12:56,178 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:56,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:12:56,369 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:12:56,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56 WrapperNode [2021-12-28 03:12:56,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:12:56,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:12:56,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:12:56,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:12:56,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,553 INFO L137 Inliner]: procedures = 691, calls = 1700, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 616 [2021-12-28 03:12:56,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:12:56,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:12:56,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:12:56,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:12:56,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:12:56,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:12:56,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:12:56,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:12:56,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (1/1) ... [2021-12-28 03:12:56,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:12:56,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:56,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:12:56,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:12:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:12:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-28 03:12:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-28 03:12:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:12:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:12:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:12:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:12:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:12:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:12:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:12:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:12:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:12:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:12:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:12:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:12:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:12:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:12:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:12:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:12:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:12:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:12:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:12:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:12:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-28 03:12:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-28 03:12:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:12:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:12:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-12-28 03:12:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-12-28 03:12:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:12:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:12:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:12:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:12:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:12:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:12:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:12:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:12:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-28 03:12:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-28 03:12:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-28 03:12:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-28 03:12:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:12:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:12:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:12:56,953 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:12:56,955 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:12:57,510 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:12:57,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:12:57,517 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:12:57,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:12:57 BoogieIcfgContainer [2021-12-28 03:12:57,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:12:57,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:12:57,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:12:57,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:12:57,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:12:54" (1/3) ... [2021-12-28 03:12:57,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5733472f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:12:57, skipping insertion in model container [2021-12-28 03:12:57,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:56" (2/3) ... [2021-12-28 03:12:57,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5733472f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:12:57, skipping insertion in model container [2021-12-28 03:12:57,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:12:57" (3/3) ... [2021-12-28 03:12:57,524 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2021-12-28 03:12:57,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:12:57,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:12:57,563 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:12:57,574 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:12:57,577 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:12:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-28 03:12:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-28 03:12:57,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:57,608 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:12:57,608 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1276829709, now seen corresponding path program 1 times [2021-12-28 03:12:57,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:57,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847005086] [2021-12-28 03:12:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:57,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:12:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:12:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:12:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:12:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:12:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:12:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:12:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:12:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:12:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:12:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:12:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:12:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:12:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 03:12:58,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:58,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847005086] [2021-12-28 03:12:58,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847005086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:58,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:12:58,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:12:58,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211264240] [2021-12-28 03:12:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:58,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:12:58,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:58,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:12:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:12:58,234 INFO L87 Difference]: Start difference. First operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 03:12:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:58,586 INFO L93 Difference]: Finished difference Result 364 states and 532 transitions. [2021-12-28 03:12:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:12:58,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2021-12-28 03:12:58,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:58,595 INFO L225 Difference]: With dead ends: 364 [2021-12-28 03:12:58,595 INFO L226 Difference]: Without dead ends: 197 [2021-12-28 03:12:58,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:12:58,601 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 111 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:12:58,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 243 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:12:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-28 03:12:58,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 164. [2021-12-28 03:12:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-28 03:12:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2021-12-28 03:12:58,639 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2021-12-28 03:12:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:58,640 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2021-12-28 03:12:58,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 03:12:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2021-12-28 03:12:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-28 03:12:58,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:58,643 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:12:58,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:12:58,643 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:58,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:58,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1354789231, now seen corresponding path program 1 times [2021-12-28 03:12:58,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:58,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581347756] [2021-12-28 03:12:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:58,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:12:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:12:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:12:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:12:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:12:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:12:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:12:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:12:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:12:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:12:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 03:12:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:12:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:12:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-28 03:12:58,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:58,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581347756] [2021-12-28 03:12:58,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581347756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:12:58,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902223728] [2021-12-28 03:12:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:58,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:58,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:58,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:12:58,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:12:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:59,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:12:59,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-28 03:12:59,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:12:59,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902223728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:59,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:12:59,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-28 03:12:59,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541685888] [2021-12-28 03:12:59,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:59,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:12:59,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:59,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:12:59,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:12:59,497 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 03:12:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:59,652 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2021-12-28 03:12:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:12:59,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2021-12-28 03:12:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:59,655 INFO L225 Difference]: With dead ends: 293 [2021-12-28 03:12:59,655 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:12:59,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:12:59,657 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 223 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:12:59,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 639 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:12:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:12:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:12:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-28 03:12:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2021-12-28 03:12:59,681 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 84 [2021-12-28 03:12:59,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:59,682 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2021-12-28 03:12:59,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 03:12:59,682 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2021-12-28 03:12:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-28 03:12:59,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:59,684 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:12:59,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 03:12:59,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:59,907 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:59,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1275658481, now seen corresponding path program 1 times [2021-12-28 03:12:59,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:59,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220637011] [2021-12-28 03:12:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:59,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:59,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:12:59,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15249053] [2021-12-28 03:12:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:59,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:59,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:12:59,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:13:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:00,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:13:00,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-28 03:13:00,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:00,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:00,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220637011] [2021-12-28 03:13:00,456 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:00,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15249053] [2021-12-28 03:13:00,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15249053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:00,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:00,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:13:00,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139713935] [2021-12-28 03:13:00,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:00,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:13:00,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:13:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:13:00,459 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 03:13:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:00,715 INFO L93 Difference]: Finished difference Result 285 states and 376 transitions. [2021-12-28 03:13:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:13:00,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2021-12-28 03:13:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:00,717 INFO L225 Difference]: With dead ends: 285 [2021-12-28 03:13:00,717 INFO L226 Difference]: Without dead ends: 166 [2021-12-28 03:13:00,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:13:00,718 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:00,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 888 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:13:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-28 03:13:00,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-28 03:13:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2021-12-28 03:13:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2021-12-28 03:13:00,730 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 99 [2021-12-28 03:13:00,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:00,731 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2021-12-28 03:13:00,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 03:13:00,731 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2021-12-28 03:13:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-28 03:13:00,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:00,732 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:00,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:00,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-28 03:13:00,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -170213077, now seen corresponding path program 2 times [2021-12-28 03:13:00,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:00,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835558973] [2021-12-28 03:13:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:00,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:00,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:00,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447866664] [2021-12-28 03:13:00,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:13:00,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:00,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:01,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:01,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:13:01,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:13:01,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:13:01,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:13:01,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-28 03:13:01,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:01,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:01,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835558973] [2021-12-28 03:13:01,612 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:01,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447866664] [2021-12-28 03:13:01,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447866664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:01,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:01,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:13:01,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199216045] [2021-12-28 03:13:01,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:01,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:13:01,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:13:01,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:13:01,614 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 03:13:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:01,938 INFO L93 Difference]: Finished difference Result 282 states and 368 transitions. [2021-12-28 03:13:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:13:01,939 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2021-12-28 03:13:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:01,940 INFO L225 Difference]: With dead ends: 282 [2021-12-28 03:13:01,940 INFO L226 Difference]: Without dead ends: 164 [2021-12-28 03:13:01,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:13:01,941 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 231 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:01,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1144 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:13:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-28 03:13:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-12-28 03:13:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 100 states have internal predecessors, (116), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-28 03:13:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2021-12-28 03:13:01,950 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 114 [2021-12-28 03:13:01,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:01,950 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2021-12-28 03:13:01,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-28 03:13:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2021-12-28 03:13:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-28 03:13:01,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:01,952 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:01,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:02,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:02,167 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1405660739, now seen corresponding path program 1 times [2021-12-28 03:13:02,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:02,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240375046] [2021-12-28 03:13:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:02,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:02,209 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149562895] [2021-12-28 03:13:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:02,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:02,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:02,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:02,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:13:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:02,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 277 conjunts are in the unsatisfiable core [2021-12-28 03:13:02,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:02,801 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 [2021-12-28 03:13:03,049 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 6 treesize of output 5 [2021-12-28 03:13:03,194 INFO L353 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-12-28 03:13:03,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 41 treesize of output 53 [2021-12-28 03:13:03,257 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-28 03:13:03,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 37 [2021-12-28 03:13:03,752 INFO L353 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2021-12-28 03:13:03,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 69 [2021-12-28 03:13:03,758 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 6 treesize of output 5 [2021-12-28 03:13:05,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:05,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:05,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2021-12-28 03:13:05,186 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-28 03:13:05,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-28 03:13:21,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 69 [2021-12-28 03:13:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 50 proven. 102 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 03:13:21,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:13:42,566 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse1 (+ c_aws_array_list_length_~list.offset 16)) (select .cse1 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse0)) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616)))) (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse3 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ c_aws_array_list_length_~list.offset 16)) (select .cse5 .cse3))))) (let ((.cse2 (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse4)) c_aws_array_list_length_~list.base))) (or (not (= (mod (select .cse2 .cse3) 18446744073709551616) 0)) (not (<= (mod .cse4 18446744073709551616) (mod (select .cse2 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))))))))) is different from false [2021-12-28 03:13:42,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:42,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240375046] [2021-12-28 03:13:42,590 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:42,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149562895] [2021-12-28 03:13:42,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149562895] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:13:42,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:13:42,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-12-28 03:13:42,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071920313] [2021-12-28 03:13:42,591 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:13:42,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-28 03:13:42,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-28 03:13:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2565, Unknown=26, NotChecked=102, Total=2862 [2021-12-28 03:13:42,594 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2021-12-28 03:13:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:53,419 INFO L93 Difference]: Finished difference Result 258 states and 332 transitions. [2021-12-28 03:13:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-28 03:13:53,419 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) Word has length 144 [2021-12-28 03:13:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:53,422 INFO L225 Difference]: With dead ends: 258 [2021-12-28 03:13:53,422 INFO L226 Difference]: Without dead ends: 256 [2021-12-28 03:13:53,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 87 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=356, Invalid=5306, Unknown=42, NotChecked=148, Total=5852 [2021-12-28 03:13:53,424 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 133 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 3527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2238 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:53,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 2236 Invalid, 3527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1180 Invalid, 0 Unknown, 2238 Unchecked, 1.0s Time] [2021-12-28 03:13:53,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-28 03:13:53,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 243. [2021-12-28 03:13:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 151 states have (on average 1.1655629139072847) internal successors, (176), 154 states have internal predecessors, (176), 64 states have call successors, (64), 27 states have call predecessors, (64), 27 states have return successors, (75), 61 states have call predecessors, (75), 63 states have call successors, (75) [2021-12-28 03:13:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 315 transitions. [2021-12-28 03:13:53,454 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 315 transitions. Word has length 144 [2021-12-28 03:13:53,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:53,455 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 315 transitions. [2021-12-28 03:13:53,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2021-12-28 03:13:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 315 transitions. [2021-12-28 03:13:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:13:53,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:53,456 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:53,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:53,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:53,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1652555983, now seen corresponding path program 1 times [2021-12-28 03:13:53,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:53,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994508840] [2021-12-28 03:13:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:53,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:53,726 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:53,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520547361] [2021-12-28 03:13:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:53,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:53,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:53,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:53,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:13:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:54,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-28 03:13:54,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-28 03:13:54,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:54,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994508840] [2021-12-28 03:13:54,395 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520547361] [2021-12-28 03:13:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520547361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:54,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:54,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 03:13:54,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621563433] [2021-12-28 03:13:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:54,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 03:13:54,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 03:13:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:13:54,396 INFO L87 Difference]: Start difference. First operand 243 states and 315 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-28 03:13:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:54,543 INFO L93 Difference]: Finished difference Result 393 states and 521 transitions. [2021-12-28 03:13:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:13:54,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) Word has length 156 [2021-12-28 03:13:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:54,545 INFO L225 Difference]: With dead ends: 393 [2021-12-28 03:13:54,545 INFO L226 Difference]: Without dead ends: 255 [2021-12-28 03:13:54,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:13:54,546 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 11 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:54,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2326 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:13:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-28 03:13:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-12-28 03:13:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.173913043478261) internal successors, (189), 165 states have internal predecessors, (189), 64 states have call successors, (64), 27 states have call predecessors, (64), 29 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2021-12-28 03:13:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2021-12-28 03:13:54,568 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 156 [2021-12-28 03:13:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:54,570 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2021-12-28 03:13:54,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-28 03:13:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2021-12-28 03:13:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-28 03:13:54,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:54,575 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:54,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-28 03:13:54,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:54,795 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash -254863076, now seen corresponding path program 1 times [2021-12-28 03:13:54,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:54,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582674920] [2021-12-28 03:13:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:54,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:54,869 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:54,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535812116] [2021-12-28 03:13:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:54,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:54,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:54,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:13:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:55,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:13:55,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-28 03:13:55,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:55,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:55,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582674920] [2021-12-28 03:13:55,449 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:55,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535812116] [2021-12-28 03:13:55,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535812116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:55,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:55,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:13:55,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016126875] [2021-12-28 03:13:55,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:55,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:13:55,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:55,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:13:55,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:13:55,450 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 03:13:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:55,477 INFO L93 Difference]: Finished difference Result 425 states and 591 transitions. [2021-12-28 03:13:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:13:55,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 150 [2021-12-28 03:13:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:55,479 INFO L225 Difference]: With dead ends: 425 [2021-12-28 03:13:55,479 INFO L226 Difference]: Without dead ends: 265 [2021-12-28 03:13:55,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:13:55,480 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 7 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 625 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 [2021-12-28 03:13:55,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 625 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:13:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-12-28 03:13:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-12-28 03:13:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 169 states have internal predecessors, (193), 64 states have call successors, (64), 27 states have call predecessors, (64), 29 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2021-12-28 03:13:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 342 transitions. [2021-12-28 03:13:55,492 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 342 transitions. Word has length 150 [2021-12-28 03:13:55,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:55,492 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 342 transitions. [2021-12-28 03:13:55,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-28 03:13:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 342 transitions. [2021-12-28 03:13:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-28 03:13:55,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:55,494 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:55,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:55,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:55,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1176878894, now seen corresponding path program 1 times [2021-12-28 03:13:55,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:55,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312299701] [2021-12-28 03:13:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:55,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:55,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:55,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196528510] [2021-12-28 03:13:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:55,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:55,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:55,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:55,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:13:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:56,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-28 03:13:56,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:56,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 03:13:56,368 INFO L353 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-28 03:13:56,368 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 [2021-12-28 03:13:58,479 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_767 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_767)))) is different from true