./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 6c24879c 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-?-6c24879 [2022-07-12 10:49:31,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:49:31,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:49:31,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:49:31,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:49:31,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:49:31,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:49:31,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:49:31,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:49:31,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:49:31,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:49:31,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:49:31,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:49:31,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:49:31,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:49:31,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:49:31,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:49:31,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:49:31,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:49:31,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:49:31,375 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:49:31,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:49:31,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:49:31,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:49:31,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:49:31,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:49:31,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:49:31,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:49:31,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:49:31,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:49:31,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:49:31,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:49:31,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:49:31,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:49:31,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:49:31,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:49:31,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:49:31,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:49:31,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:49:31,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:49:31,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:49:31,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:49:31,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:49:31,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:49:31,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:49:31,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:49:31,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:49:31,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:49:31,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:49:31,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:49:31,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:49:31,417 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:49:31,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:49:31,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:49:31,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:49:31,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:49:31,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:49:31,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:49:31,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:49:31,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:49:31,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:49:31,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:49:31,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:49:31,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:49:31,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:49:31,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:49:31,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:49:31,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:49:31,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:49:31,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:49:31,420 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:49:31,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:49:31,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:49:31,421 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2022-07-12 10:49:31,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:49:31,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:49:31,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:49:31,629 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:49:31,629 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:49:31,630 INFO L432 ainManager$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 [2022-07-12 10:49:31,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deec528de/fdc4c42aa23b49f7bdd860bd86dedbe3/FLAG2aad15504 [2022-07-12 10:49:32,225 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:49:32,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2022-07-12 10:49:32,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deec528de/fdc4c42aa23b49f7bdd860bd86dedbe3/FLAG2aad15504 [2022-07-12 10:49:32,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deec528de/fdc4c42aa23b49f7bdd860bd86dedbe3 [2022-07-12 10:49:32,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:49:32,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:49:32,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:49:32,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:49:32,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:49:32,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:49:32" (1/1) ... [2022-07-12 10:49:32,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae22591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:32, skipping insertion in model container [2022-07-12 10:49:32,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:49:32" (1/1) ... [2022-07-12 10:49:32,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:49:32,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:49:32,911 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] [2022-07-12 10:49:32,917 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] [2022-07-12 10:49:33,295 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:49:33,338 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,338 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,339 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,344 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,345 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,355 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,355 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,356 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,357 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,358 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,358 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,359 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,359 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,553 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:49:33,555 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:49:33,556 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:49:33,559 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:49:33,560 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:49:33,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:49:33,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:49:33,565 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:49:33,567 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:49:33,568 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:49:33,670 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,674 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:49:33,760 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:49:33,769 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] [2022-07-12 10:49:33,770 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] [2022-07-12 10:49:33,795 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:49:33,803 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,807 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,807 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,813 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,815 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,818 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,818 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,842 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:49:33,843 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:49:33,843 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:49:33,844 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:49:33,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:49:33,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:49:33,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:49:33,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:49:33,846 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:49:33,846 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:49:33,860 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,870 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:49:33,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:49:34,062 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:49:34,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34 WrapperNode [2022-07-12 10:49:34,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:49:34,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:49:34,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:49:34,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:49:34,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,191 INFO L137 Inliner]: procedures = 691, calls = 1700, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 616 [2022-07-12 10:49:34,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:49:34,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:49:34,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:49:34,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:49:34,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:49:34,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:49:34,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:49:34,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:49:34,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (1/1) ... [2022-07-12 10:49:34,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:49:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:34,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:49:34,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:49:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:49:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-12 10:49:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-12 10:49:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 10:49:34,328 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 10:49:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:49:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:49:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:49:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 10:49:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 10:49:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:49:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:49:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:49:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:49:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:49:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:49:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:49:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:49:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:49:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:49:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:49:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 10:49:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 10:49:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-12 10:49:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-12 10:49:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:49:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:49:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-07-12 10:49:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-07-12 10:49:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:49:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:49:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:49:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:49:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:49:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 10:49:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 10:49:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:49:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-12 10:49:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-12 10:49:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-12 10:49:34,332 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-12 10:49:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:49:34,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:49:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:49:34,533 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:49:34,537 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:49:35,109 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:49:35,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:49:35,116 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:49:35,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:49:35 BoogieIcfgContainer [2022-07-12 10:49:35,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:49:35,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:49:35,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:49:35,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:49:35,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:49:32" (1/3) ... [2022-07-12 10:49:35,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d911999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:49:35, skipping insertion in model container [2022-07-12 10:49:35,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:49:34" (2/3) ... [2022-07-12 10:49:35,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d911999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:49:35, skipping insertion in model container [2022-07-12 10:49:35,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:49:35" (3/3) ... [2022-07-12 10:49:35,124 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2022-07-12 10:49:35,133 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:49:35,133 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:49:35,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:49:35,188 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4563895f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44df330d [2022-07-12 10:49:35,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:49:35,192 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) [2022-07-12 10:49:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 10:49:35,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:35,203 INFO L195 NwaCegarLoop]: 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] [2022-07-12 10:49:35,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:35,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1276829709, now seen corresponding path program 1 times [2022-07-12 10:49:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:35,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631083340] [2022-07-12 10:49:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:35,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:49:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:49:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:49:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:49:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:49:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:49:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:49:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:49:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:49:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 10:49:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:49:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:49:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:49:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 10:49:35,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:49:35,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631083340] [2022-07-12 10:49:35,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631083340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:49:35,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:49:35,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:49:35,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393635941] [2022-07-12 10:49:35,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:49:35,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:49:35,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:49:35,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:49:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:49:35,770 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) [2022-07-12 10:49:36,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:49:36,202 INFO L93 Difference]: Finished difference Result 364 states and 532 transitions. [2022-07-12 10:49:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:49:36,204 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 [2022-07-12 10:49:36,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:49:36,212 INFO L225 Difference]: With dead ends: 364 [2022-07-12 10:49:36,212 INFO L226 Difference]: Without dead ends: 197 [2022-07-12 10:49:36,219 INFO L412 NwaCegarLoop]: 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 [2022-07-12 10:49:36,223 INFO L413 NwaCegarLoop]: 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 [2022-07-12 10:49:36,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 243 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:49:36,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-12 10:49:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 164. [2022-07-12 10:49:36,282 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) [2022-07-12 10:49:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2022-07-12 10:49:36,285 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2022-07-12 10:49:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:49:36,285 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2022-07-12 10:49:36,285 INFO L496 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) [2022-07-12 10:49:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2022-07-12 10:49:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 10:49:36,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:36,294 INFO L195 NwaCegarLoop]: 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] [2022-07-12 10:49:36,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:49:36,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:36,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1354789231, now seen corresponding path program 1 times [2022-07-12 10:49:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:36,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462285403] [2022-07-12 10:49:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:36,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:49:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:49:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:49:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:49:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:49:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:49:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:49:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:49:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:49:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 10:49:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:49:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:49:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:49:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 10:49:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:49:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462285403] [2022-07-12 10:49:36,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462285403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:49:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403118659] [2022-07-12 10:49:36,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:36,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:36,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:49:36,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:49:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:36,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 10:49:36,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:49:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 10:49:37,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:49:37,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403118659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:49:37,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:49:37,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-12 10:49:37,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777685734] [2022-07-12 10:49:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:49:37,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:49:37,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:49:37,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:49:37,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:49:37,026 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) [2022-07-12 10:49:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:49:37,208 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2022-07-12 10:49:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:49:37,210 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 [2022-07-12 10:49:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:49:37,215 INFO L225 Difference]: With dead ends: 293 [2022-07-12 10:49:37,215 INFO L226 Difference]: Without dead ends: 166 [2022-07-12 10:49:37,216 INFO L412 NwaCegarLoop]: 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 [2022-07-12 10:49:37,217 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 223 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:49:37,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 628 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:49:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-12 10:49:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-12 10:49:37,245 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) [2022-07-12 10:49:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2022-07-12 10:49:37,247 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 84 [2022-07-12 10:49:37,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:49:37,248 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2022-07-12 10:49:37,248 INFO L496 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) [2022-07-12 10:49:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2022-07-12 10:49:37,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 10:49:37,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:37,250 INFO L195 NwaCegarLoop]: 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] [2022-07-12 10:49:37,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 10:49:37,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:37,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1275658481, now seen corresponding path program 1 times [2022-07-12 10:49:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:37,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91204956] [2022-07-12 10:49:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:37,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:37,509 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:49:37,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972583843] [2022-07-12 10:49:37,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:37,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:37,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:37,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:49:37,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:49:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:37,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:49:37,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:49:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 10:49:37,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:49:37,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:49:37,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91204956] [2022-07-12 10:49:37,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:49:37,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972583843] [2022-07-12 10:49:37,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972583843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:49:37,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:49:37,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:49:37,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136060413] [2022-07-12 10:49:37,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:49:37,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:49:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:49:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:49:37,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:49:37,889 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) [2022-07-12 10:49:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:49:38,187 INFO L93 Difference]: Finished difference Result 285 states and 376 transitions. [2022-07-12 10:49:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:49:38,187 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 [2022-07-12 10:49:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:49:38,189 INFO L225 Difference]: With dead ends: 285 [2022-07-12 10:49:38,189 INFO L226 Difference]: Without dead ends: 166 [2022-07-12 10:49:38,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:49:38,190 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:49:38,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 849 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:49:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-12 10:49:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-12 10:49:38,211 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) [2022-07-12 10:49:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2022-07-12 10:49:38,212 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 99 [2022-07-12 10:49:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:49:38,212 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2022-07-12 10:49:38,213 INFO L496 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) [2022-07-12 10:49:38,213 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2022-07-12 10:49:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 10:49:38,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:38,213 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:49:38,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:49:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 10:49:38,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash -170213077, now seen corresponding path program 2 times [2022-07-12 10:49:38,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:38,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502169730] [2022-07-12 10:49:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:38,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:49:38,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945981641] [2022-07-12 10:49:38,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:49:38,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:38,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:49:38,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:49:38,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:49:38,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:49:38,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 10:49:38,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:49:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 10:49:38,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:49:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:49:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502169730] [2022-07-12 10:49:38,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:49:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945981641] [2022-07-12 10:49:38,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945981641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:49:38,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:49:38,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:49:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237168307] [2022-07-12 10:49:38,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:49:38,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:49:38,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:49:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:49:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:49:38,939 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) [2022-07-12 10:49:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:49:39,287 INFO L93 Difference]: Finished difference Result 282 states and 368 transitions. [2022-07-12 10:49:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:49:39,287 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 [2022-07-12 10:49:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:49:39,293 INFO L225 Difference]: With dead ends: 282 [2022-07-12 10:49:39,293 INFO L226 Difference]: Without dead ends: 164 [2022-07-12 10:49:39,295 INFO L412 NwaCegarLoop]: 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 [2022-07-12 10:49:39,297 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 231 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:49:39,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1077 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:49:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-12 10:49:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-12 10:49:39,315 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) [2022-07-12 10:49:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2022-07-12 10:49:39,316 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 114 [2022-07-12 10:49:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:49:39,317 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2022-07-12 10:49:39,317 INFO L496 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) [2022-07-12 10:49:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2022-07-12 10:49:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 10:49:39,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:39,319 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:49:39,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:49:39,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:39,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1405660739, now seen corresponding path program 1 times [2022-07-12 10:49:39,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:39,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443621019] [2022-07-12 10:49:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:39,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:49:39,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571281787] [2022-07-12 10:49:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:39,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:39,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:39,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:49:39,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:49:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:40,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 277 conjunts are in the unsatisfiable core [2022-07-12 10:49:40,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:49:40,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:49:40,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:49:40,536 INFO L356 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-07-12 10:49:40,536 INFO L390 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 [2022-07-12 10:49:40,602 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-12 10:49:40,602 INFO L390 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 [2022-07-12 10:49:41,005 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-12 10:49:41,005 INFO L390 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 [2022-07-12 10:49:41,011 INFO L390 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 [2022-07-12 10:49:47,260 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 10:50:02,459 WARN L233 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 55 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:50:02,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:02,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:02,596 INFO L390 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 [2022-07-12 10:50:02,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:02,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:02,739 INFO L390 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 [2022-07-12 10:50:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:02,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:02,808 INFO L390 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 [2022-07-12 10:50:02,910 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:50:02,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 166 treesize of output 228 [2022-07-12 10:50:51,804 WARN L233 SmtUtils]: Spent 15.92s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:50:58,169 INFO L356 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-07-12 10:50:58,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 364 [2022-07-12 10:51:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 50 proven. 102 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 10:51:00,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:51:12,196 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (let ((.cse2 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse3 (+ c_aws_array_list_length_~list.offset 16)) (select .cse3 .cse2))))) (let ((.cse1 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse0)) c_aws_array_list_length_~list.base))) (or (not (<= (mod .cse0 18446744073709551616) (mod (select .cse1 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))) (not (= (mod (select .cse1 .cse2) 18446744073709551616) 0))))))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (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 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse4 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse4)) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))))) is different from false [2022-07-12 10:51:12,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:12,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443621019] [2022-07-12 10:51:12,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:12,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571281787] [2022-07-12 10:51:12,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571281787] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:51:12,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:51:12,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2022-07-12 10:51:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350577018] [2022-07-12 10:51:12,220 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:51:12,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-12 10:51:12,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-12 10:51:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2570, Unknown=21, NotChecked=102, Total=2862 [2022-07-12 10:51:12,222 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) [2022-07-12 10:51:21,286 WARN L233 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 79 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:51:29,641 WARN L233 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 73 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:51:41,197 WARN L233 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 74 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:52:13,260 WARN L233 SmtUtils]: Spent 31.95s on a formula simplification. DAG size of input: 81 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:52:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:15,682 INFO L93 Difference]: Finished difference Result 254 states and 329 transitions. [2022-07-12 10:52:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-12 10:52:15,683 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 [2022-07-12 10:52:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:15,685 INFO L225 Difference]: With dead ends: 254 [2022-07-12 10:52:15,685 INFO L226 Difference]: Without dead ends: 252 [2022-07-12 10:52:15,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 107.9s TimeCoverageRelationStatistics Valid=329, Invalid=5040, Unknown=37, NotChecked=144, Total=5550 [2022-07-12 10:52:15,687 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 130 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 3496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2208 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:15,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2182 Invalid, 3496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1181 Invalid, 0 Unknown, 2208 Unchecked, 1.0s Time] [2022-07-12 10:52:15,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-12 10:52:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 239. [2022-07-12 10:52:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 151 states have internal predecessors, (173), 64 states have call successors, (64), 26 states have call predecessors, (64), 26 states have return successors, (75), 61 states have call predecessors, (75), 63 states have call successors, (75) [2022-07-12 10:52:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 312 transitions. [2022-07-12 10:52:15,700 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 312 transitions. Word has length 144 [2022-07-12 10:52:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:15,700 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 312 transitions. [2022-07-12 10:52:15,701 INFO L496 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) [2022-07-12 10:52:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 312 transitions. [2022-07-12 10:52:15,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 10:52:15,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:15,702 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:52:15,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:15,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:15,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:15,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1456570214, now seen corresponding path program 1 times [2022-07-12 10:52:15,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:15,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562748152] [2022-07-12 10:52:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:15,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:15,974 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:52:15,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626371512] [2022-07-12 10:52:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:15,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:15,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:15,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:52:15,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:52:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:52:16,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 10:52:16,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:16,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:16,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562748152] [2022-07-12 10:52:16,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:52:16,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626371512] [2022-07-12 10:52:16,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626371512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:16,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:16,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:52:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061164457] [2022-07-12 10:52:16,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:52:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:52:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:52:16,452 INFO L87 Difference]: Start difference. First operand 239 states and 312 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 10:52:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:16,678 INFO L93 Difference]: Finished difference Result 392 states and 524 transitions. [2022-07-12 10:52:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:52:16,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2022-07-12 10:52:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:16,681 INFO L225 Difference]: With dead ends: 392 [2022-07-12 10:52:16,681 INFO L226 Difference]: Without dead ends: 256 [2022-07-12 10:52:16,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:52:16,682 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 12 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:16,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2518 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:52:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-12 10:52:16,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2022-07-12 10:52:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 158 states have (on average 1.1772151898734178) internal successors, (186), 162 states have internal predecessors, (186), 64 states have call successors, (64), 26 states have call predecessors, (64), 28 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2022-07-12 10:52:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 335 transitions. [2022-07-12 10:52:16,706 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 335 transitions. Word has length 150 [2022-07-12 10:52:16,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:16,707 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 335 transitions. [2022-07-12 10:52:16,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 10:52:16,708 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 335 transitions. [2022-07-12 10:52:16,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 10:52:16,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:16,710 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:52:16,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:16,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1295460992, now seen corresponding path program 2 times [2022-07-12 10:52:16,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:16,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907391030] [2022-07-12 10:52:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:16,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:16,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:52:16,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750549677] [2022-07-12 10:52:16,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:52:16,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:16,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:16,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:52:16,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:52:17,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:52:17,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:52:17,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:52:17,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 10:52:18,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:18,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:18,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907391030] [2022-07-12 10:52:18,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:52:18,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750549677] [2022-07-12 10:52:18,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750549677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:18,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:18,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:52:18,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525438207] [2022-07-12 10:52:18,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:18,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:52:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:18,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:52:18,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:52:18,057 INFO L87 Difference]: Start difference. First operand 251 states and 335 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 10:52:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:18,245 INFO L93 Difference]: Finished difference Result 401 states and 534 transitions. [2022-07-12 10:52:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:52:18,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 150 [2022-07-12 10:52:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:18,247 INFO L225 Difference]: With dead ends: 401 [2022-07-12 10:52:18,247 INFO L226 Difference]: Without dead ends: 251 [2022-07-12 10:52:18,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:52:18,248 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 11 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:18,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2276 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:52:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-12 10:52:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-12 10:52:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 158 states have (on average 1.1772151898734178) internal successors, (186), 162 states have internal predecessors, (186), 64 states have call successors, (64), 26 states have call predecessors, (64), 28 states have return successors, (83), 62 states have call predecessors, (83), 63 states have call successors, (83) [2022-07-12 10:52:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 333 transitions. [2022-07-12 10:52:18,265 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 333 transitions. Word has length 150 [2022-07-12 10:52:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:18,265 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 333 transitions. [2022-07-12 10:52:18,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 10:52:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 333 transitions. [2022-07-12 10:52:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 10:52:18,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:18,267 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:52:18,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:18,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:18,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1800027525, now seen corresponding path program 1 times [2022-07-12 10:52:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:18,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061351269] [2022-07-12 10:52:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:18,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:18,533 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:52:18,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057393901] [2022-07-12 10:52:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:18,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:18,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:18,535 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:52:18,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:52:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:52:18,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 10:52:18,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:18,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:18,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061351269] [2022-07-12 10:52:18,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:52:18,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057393901] [2022-07-12 10:52:18,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057393901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:18,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:18,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:52:18,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149407848] [2022-07-12 10:52:18,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:18,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:52:18,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:52:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:52:18,940 INFO L87 Difference]: Start difference. First operand 251 states and 333 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 10:52:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:18,970 INFO L93 Difference]: Finished difference Result 421 states and 583 transitions. [2022-07-12 10:52:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:52:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-07-12 10:52:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:18,973 INFO L225 Difference]: With dead ends: 421 [2022-07-12 10:52:18,973 INFO L226 Difference]: Without dead ends: 261 [2022-07-12 10:52:18,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:18,975 INFO L413 NwaCegarLoop]: 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 [2022-07-12 10:52:18,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 625 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:52:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-12 10:52:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2022-07-12 10:52:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 166 states have internal predecessors, (190), 64 states have call successors, (64), 26 states have call predecessors, (64), 28 states have return successors, (83), 62 states have call predecessors, (83), 63 states have call successors, (83) [2022-07-12 10:52:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 337 transitions. [2022-07-12 10:52:18,988 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 337 transitions. Word has length 144 [2022-07-12 10:52:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:18,989 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 337 transitions. [2022-07-12 10:52:18,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 10:52:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 337 transitions. [2022-07-12 10:52:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 10:52:18,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:18,996 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:52:19,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:19,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:19,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:19,216 INFO L85 PathProgramCache]: Analyzing trace with hash 781575715, now seen corresponding path program 1 times [2022-07-12 10:52:19,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:19,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954095088] [2022-07-12 10:52:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:19,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:19,272 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:52:19,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710176228] [2022-07-12 10:52:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:19,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:19,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:19,273 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:52:19,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:52:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-12 10:52:19,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:22,004 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_859 Int) (v_ArrVal_858 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_858))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_859)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-12 10:53:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 133 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 10:53:00,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:53:02,734 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_872 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_25| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_25| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_25|) 0 v_ArrVal_872)) c_aws_array_list_pop_back_~list.base) (+ 32 c_aws_array_list_pop_back_~list.offset)) 0)) (forall ((v_ArrVal_873 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_25| Int)) (= 0 (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_25| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_25|) 0 v_ArrVal_873)) c_aws_array_list_pop_back_~list.base) (+ 32 c_aws_array_list_pop_back_~list.offset))))) is different from false [2022-07-12 10:53:02,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:02,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954095088] [2022-07-12 10:53:02,735 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:53:02,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710176228] [2022-07-12 10:53:02,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710176228] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:02,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:53:02,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-07-12 10:53:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876108979] [2022-07-12 10:53:02,736 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:53:02,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 10:53:02,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:02,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 10:53:02,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=285, Unknown=13, NotChecked=70, Total=420 [2022-07-12 10:53:02,737 INFO L87 Difference]: Start difference. First operand 255 states and 337 transitions. Second operand has 20 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-12 10:53:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:29,728 INFO L93 Difference]: Finished difference Result 496 states and 685 transitions. [2022-07-12 10:53:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:53:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) Word has length 146 [2022-07-12 10:53:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:29,731 INFO L225 Difference]: With dead ends: 496 [2022-07-12 10:53:29,731 INFO L226 Difference]: Without dead ends: 334 [2022-07-12 10:53:29,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 68.8s TimeCoverageRelationStatistics Valid=128, Invalid=666, Unknown=26, NotChecked=110, Total=930 [2022-07-12 10:53:29,732 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 131 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1265 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:29,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1404 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 987 Invalid, 0 Unknown, 1265 Unchecked, 0.7s Time] [2022-07-12 10:53:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-12 10:53:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 284. [2022-07-12 10:53:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 182 states have (on average 1.164835164835165) internal successors, (212), 189 states have internal predecessors, (212), 68 states have call successors, (68), 30 states have call predecessors, (68), 33 states have return successors, (107), 64 states have call predecessors, (107), 67 states have call successors, (107) [2022-07-12 10:53:29,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 387 transitions. [2022-07-12 10:53:29,766 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 387 transitions. Word has length 146 [2022-07-12 10:53:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:29,766 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 387 transitions. [2022-07-12 10:53:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-12 10:53:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 387 transitions. [2022-07-12 10:53:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-12 10:53:29,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:29,768 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:53:29,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:53:29,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-12 10:53:29,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:29,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1347632212, now seen corresponding path program 1 times [2022-07-12 10:53:29,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:29,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644806088] [2022-07-12 10:53:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:30,036 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:53:30,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023009729] [2022-07-12 10:53:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:30,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:30,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:30,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:53:30,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:53:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:30,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 110 conjunts are in the unsatisfiable core [2022-07-12 10:53:30,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:30,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:53:30,562 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 10:53:30,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 10:53:32,658 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1033 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1033)) |c_#memory_$Pointer$.offset|)) is different from true [2022-07-12 10:53:47,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:47,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 10:53:48,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-12 10:53:55,200 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1034 Int)) (= |c_#memory_$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_1034)))) is different from true