./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_front_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 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:52:25,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:52:25,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:52:25,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:52:25,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:52:25,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:52:25,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:52:25,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:52:25,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:52:25,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:52:25,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:52:25,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:52:25,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:52:25,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:52:25,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:52:25,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:52:25,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:52:25,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:52:25,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:52:25,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:52:25,388 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:52:25,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:52:25,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:52:25,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:52:25,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:52:25,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:52:25,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:52:25,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:52:25,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:52:25,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:52:25,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:52:25,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:52:25,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:52:25,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:52:25,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:52:25,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:52:25,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:52:25,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:52:25,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:52:25,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:52:25,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:52:25,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:52:25,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:52:25,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:52:25,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:52:25,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:52:25,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:52:25,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:52:25,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:52:25,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:52:25,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:52:25,442 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:52:25,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:52:25,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:52:25,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:52:25,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:52:25,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:52:25,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:52:25,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:52:25,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:52:25,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:52:25,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:52:25,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:52:25,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:52:25,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:52:25,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:52:25,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:52:25,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:52:25,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:52:25,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:52:25,447 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:52:25,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:52:25,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:52:25,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2022-07-19 21:52:25,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:52:25,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:52:25,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:52:25,705 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:52:25,705 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:52:25,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-07-19 21:52:25,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1cb1d54/f4e6c74bb0c443c39e17a8d6c91277e6/FLAGf6c5a2e95 [2022-07-19 21:52:26,474 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:52:26,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-07-19 21:52:26,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1cb1d54/f4e6c74bb0c443c39e17a8d6c91277e6/FLAGf6c5a2e95 [2022-07-19 21:52:26,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1cb1d54/f4e6c74bb0c443c39e17a8d6c91277e6 [2022-07-19 21:52:26,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:52:26,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:52:26,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:52:26,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:52:26,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:52:26,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:52:26" (1/1) ... [2022-07-19 21:52:26,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1797d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:26, skipping insertion in model container [2022-07-19 21:52:26,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:52:26" (1/1) ... [2022-07-19 21:52:26,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:52:26,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:52:26,897 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_front_harness.i[4498,4511] [2022-07-19 21:52:26,904 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_front_harness.i[4558,4571] [2022-07-19 21:52:27,449 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:52:27,497 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,498 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,498 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,499 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,499 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,517 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,519 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,520 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,521 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,522 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,525 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,747 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:52:27,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:52:27,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:52:27,754 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:52:27,756 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:52:27,757 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:52:27,758 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:52:27,760 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:52:27,762 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:52:27,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:52:27,882 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,886 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:27,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:52:27,963 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:52:27,975 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_front_harness.i[4498,4511] [2022-07-19 21:52:27,975 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_front_harness.i[4558,4571] [2022-07-19 21:52:28,002 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:52:28,015 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,015 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,016 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,016 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,017 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,021 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,022 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,023 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,023 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,024 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,024 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,025 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,025 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,050 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:52:28,051 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:52:28,051 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:52:28,052 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:52:28,053 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:52:28,053 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:52:28,062 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:52:28,062 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:52:28,063 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:52:28,063 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:52:28,127 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,130 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:52:28,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:52:28,382 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:52:28,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28 WrapperNode [2022-07-19 21:52:28,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:52:28,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:52:28,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:52:28,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:52:28,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,535 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 684 [2022-07-19 21:52:28,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:52:28,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:52:28,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:52:28,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:52:28,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:52:28,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:52:28,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:52:28,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:52:28,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (1/1) ... [2022-07-19 21:52:28,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:52:28,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:28,668 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) [2022-07-19 21:52:28,691 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 [2022-07-19 21:52:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2022-07-19 21:52:28,715 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2022-07-19 21:52:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:52:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-19 21:52:28,716 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-19 21:52:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-19 21:52:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-19 21:52:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:52:28,718 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:52:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:52:28,718 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-19 21:52:28,718 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-19 21:52:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:52:28,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:52:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:52:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:52:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:52:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:52:28,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:52:28,720 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:52:28,720 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-19 21:52:28,721 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-19 21:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-19 21:52:28,721 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-19 21:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-19 21:52:28,722 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-19 21:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:52:28,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:52:28,723 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-19 21:52:28,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-19 21:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:52:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2022-07-19 21:52:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2022-07-19 21:52:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2022-07-19 21:52:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2022-07-19 21:52:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-19 21:52:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-19 21:52:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:52:28,984 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:52:28,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:52:29,710 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:52:29,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:52:29,717 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:52:29,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:52:29 BoogieIcfgContainer [2022-07-19 21:52:29,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:52:29,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:52:29,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:52:29,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:52:29,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:52:26" (1/3) ... [2022-07-19 21:52:29,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f1cab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:52:29, skipping insertion in model container [2022-07-19 21:52:29,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:52:28" (2/3) ... [2022-07-19 21:52:29,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f1cab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:52:29, skipping insertion in model container [2022-07-19 21:52:29,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:52:29" (3/3) ... [2022-07-19 21:52:29,726 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2022-07-19 21:52:29,738 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:52:29,738 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:52:29,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:52:29,789 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@77370fed, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e2ee1de [2022-07-19 21:52:29,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:52:29,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-07-19 21:52:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 21:52:29,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:29,804 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] [2022-07-19 21:52:29,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash 928387541, now seen corresponding path program 1 times [2022-07-19 21:52:29,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:29,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974977042] [2022-07-19 21:52:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:29,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:52:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:52:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 21:52:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:52:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:52:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:52:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 21:52:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:52:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:52:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:52:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 21:52:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:52:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 21:52:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 21:52:30,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:30,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974977042] [2022-07-19 21:52:30,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974977042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:52:30,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:52:30,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:52:30,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516752158] [2022-07-19 21:52:30,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:52:30,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:52:30,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:52:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:52:30,582 INFO L87 Difference]: Start difference. First operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) 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) [2022-07-19 21:52:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:31,201 INFO L93 Difference]: Finished difference Result 413 states and 633 transitions. [2022-07-19 21:52:31,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:52:31,203 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 [2022-07-19 21:52:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:31,214 INFO L225 Difference]: With dead ends: 413 [2022-07-19 21:52:31,214 INFO L226 Difference]: Without dead ends: 230 [2022-07-19 21:52:31,219 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 [2022-07-19 21:52:31,222 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 70 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:31,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 352 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 21:52:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-19 21:52:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 180. [2022-07-19 21:52:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-07-19 21:52:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2022-07-19 21:52:31,277 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 84 [2022-07-19 21:52:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:31,278 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2022-07-19 21:52:31,278 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) [2022-07-19 21:52:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2022-07-19 21:52:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 21:52:31,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:31,282 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] [2022-07-19 21:52:31,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:52:31,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash -734960815, now seen corresponding path program 1 times [2022-07-19 21:52:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:31,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492672683] [2022-07-19 21:52:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:52:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:52:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 21:52:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:52:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:52:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:52:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 21:52:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:52:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:52:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:52:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 21:52:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:52:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 21:52:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-19 21:52:31,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492672683] [2022-07-19 21:52:31,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492672683] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:52:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744831378] [2022-07-19 21:52:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:31,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:31,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:31,606 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) [2022-07-19 21:52:31,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:52:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:31,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 21:52:32,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-19 21:52:32,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:52:32,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744831378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:52:32,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:52:32,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-19 21:52:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663114673] [2022-07-19 21:52:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:52:32,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:52:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:52:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:52:32,096 INFO L87 Difference]: Start difference. First operand 180 states and 239 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) [2022-07-19 21:52:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:32,354 INFO L93 Difference]: Finished difference Result 325 states and 446 transitions. [2022-07-19 21:52:32,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:52:32,355 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 [2022-07-19 21:52:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:32,357 INFO L225 Difference]: With dead ends: 325 [2022-07-19 21:52:32,357 INFO L226 Difference]: Without dead ends: 182 [2022-07-19 21:52:32,358 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 [2022-07-19 21:52:32,359 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 245 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:32,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 706 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:52:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-19 21:52:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-19 21:52:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2022-07-19 21:52:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2022-07-19 21:52:32,379 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 84 [2022-07-19 21:52:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:32,380 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2022-07-19 21:52:32,380 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) [2022-07-19 21:52:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2022-07-19 21:52:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 21:52:32,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:32,382 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] [2022-07-19 21:52:32,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 21:52:32,607 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 [2022-07-19 21:52:32,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1141222523, now seen corresponding path program 1 times [2022-07-19 21:52:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:32,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809699526] [2022-07-19 21:52:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:32,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:32,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289461001] [2022-07-19 21:52:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:32,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:32,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:32,709 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) [2022-07-19 21:52:32,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:52:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:33,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:52:33,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 21:52:33,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:52:33,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:33,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809699526] [2022-07-19 21:52:33,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:33,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289461001] [2022-07-19 21:52:33,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289461001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:52:33,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:52:33,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:52:33,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418828923] [2022-07-19 21:52:33,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:52:33,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:52:33,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:52:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:52:33,199 INFO L87 Difference]: Start difference. First operand 182 states and 250 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) [2022-07-19 21:52:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:33,623 INFO L93 Difference]: Finished difference Result 317 states and 440 transitions. [2022-07-19 21:52:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:52:33,624 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 [2022-07-19 21:52:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:33,626 INFO L225 Difference]: With dead ends: 317 [2022-07-19 21:52:33,626 INFO L226 Difference]: Without dead ends: 182 [2022-07-19 21:52:33,627 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 [2022-07-19 21:52:33,628 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 265 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:33,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 934 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:52:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-19 21:52:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-19 21:52:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-07-19 21:52:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2022-07-19 21:52:33,671 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 99 [2022-07-19 21:52:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:33,671 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2022-07-19 21:52:33,672 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) [2022-07-19 21:52:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2022-07-19 21:52:33,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 21:52:33,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:33,677 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] [2022-07-19 21:52:33,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:52:33,895 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 [2022-07-19 21:52:33,896 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash 232916013, now seen corresponding path program 2 times [2022-07-19 21:52:33,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:33,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025330761] [2022-07-19 21:52:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:33,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:33,963 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:33,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218953678] [2022-07-19 21:52:33,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:52:33,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:33,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:33,966 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) [2022-07-19 21:52:33,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:52:34,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:52:34,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:52:34,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 21:52:34,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-19 21:52:34,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:52:34,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:34,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025330761] [2022-07-19 21:52:34,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:34,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218953678] [2022-07-19 21:52:34,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218953678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:52:34,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:52:34,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:52:34,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35882140] [2022-07-19 21:52:34,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:52:34,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:52:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:34,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:52:34,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:52:34,773 INFO L87 Difference]: Start difference. First operand 182 states and 247 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) [2022-07-19 21:52:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:35,342 INFO L93 Difference]: Finished difference Result 326 states and 450 transitions. [2022-07-19 21:52:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:52:35,343 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 [2022-07-19 21:52:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:35,345 INFO L225 Difference]: With dead ends: 326 [2022-07-19 21:52:35,345 INFO L226 Difference]: Without dead ends: 194 [2022-07-19 21:52:35,346 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 [2022-07-19 21:52:35,347 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 283 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:35,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1236 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 21:52:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-19 21:52:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-07-19 21:52:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 115 states have internal predecessors, (134), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2022-07-19 21:52:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2022-07-19 21:52:35,366 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 114 [2022-07-19 21:52:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:35,367 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2022-07-19 21:52:35,367 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) [2022-07-19 21:52:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2022-07-19 21:52:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 21:52:35,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:35,369 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] [2022-07-19 21:52:35,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:52:35,595 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 [2022-07-19 21:52:35,596 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash -159680425, now seen corresponding path program 1 times [2022-07-19 21:52:35,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:35,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449253812] [2022-07-19 21:52:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:35,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:35,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:35,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828410271] [2022-07-19 21:52:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:35,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:35,669 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) [2022-07-19 21:52:35,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:52:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:36,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 331 conjunts are in the unsatisfiable core [2022-07-19 21:52:36,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:36,655 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 [2022-07-19 21:52:36,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:52:37,380 INFO L356 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-07-19 21:52:37,381 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 [2022-07-19 21:52:37,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:52:37,628 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-19 21:52:37,628 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 [2022-07-19 21:52:39,792 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-19 21:52:39,793 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 [2022-07-19 21:52:39,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:52:39,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:52:39,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-07-19 21:52:54,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:52:54,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:52:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:52:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:52:54,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:52:54,235 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-07-19 21:52:54,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 76 [2022-07-19 21:52:56,550 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-19 21:52:56,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-19 21:53:39,967 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-19 21:53:39,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 165 treesize of output 101 [2022-07-19 21:53:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 49 proven. 106 refuted. 2 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 21:53:40,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:53:56,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:53:56,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449253812] [2022-07-19 21:53:56,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:53:56,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828410271] [2022-07-19 21:53:56,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828410271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:53:56,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:53:56,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2022-07-19 21:53:56,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057354720] [2022-07-19 21:53:56,225 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:53:56,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-19 21:53:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:53:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-19 21:53:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=3640, Unknown=41, NotChecked=0, Total=3906 [2022-07-19 21:53:56,228 INFO L87 Difference]: Start difference. First operand 194 states and 264 transitions. Second operand has 59 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 18 states have call successors, (23), 11 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-19 21:54:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:18,772 INFO L93 Difference]: Finished difference Result 266 states and 369 transitions. [2022-07-19 21:54:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-19 21:54:18,773 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 18 states have call successors, (23), 11 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) Word has length 144 [2022-07-19 21:54:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:18,777 INFO L225 Difference]: With dead ends: 266 [2022-07-19 21:54:18,777 INFO L226 Difference]: Without dead ends: 262 [2022-07-19 21:54:18,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2229 ImplicationChecksByTransitivity, 66.3s TimeCoverageRelationStatistics Valid=381, Invalid=6375, Unknown=50, NotChecked=0, Total=6806 [2022-07-19 21:54:18,780 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 88 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 5027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2911 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:18,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 3076 Invalid, 5027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2044 Invalid, 0 Unknown, 2911 Unchecked, 1.6s Time] [2022-07-19 21:54:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-19 21:54:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2022-07-19 21:54:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 154 states have (on average 1.1753246753246753) internal successors, (181), 158 states have internal predecessors, (181), 74 states have call successors, (74), 25 states have call predecessors, (74), 27 states have return successors, (101), 72 states have call predecessors, (101), 73 states have call successors, (101) [2022-07-19 21:54:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 356 transitions. [2022-07-19 21:54:18,806 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 356 transitions. Word has length 144 [2022-07-19 21:54:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:18,807 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 356 transitions. [2022-07-19 21:54:18,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 18 states have call successors, (23), 11 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-19 21:54:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 356 transitions. [2022-07-19 21:54:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 21:54:18,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:18,809 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] [2022-07-19 21:54:18,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:19,028 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 [2022-07-19 21:54:19,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:19,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1466822823, now seen corresponding path program 1 times [2022-07-19 21:54:19,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:19,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997961101] [2022-07-19 21:54:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:19,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:19,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:19,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52191078] [2022-07-19 21:54:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:19,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:19,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:19,107 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) [2022-07-19 21:54:19,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:54:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:19,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:54:19,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-19 21:54:19,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:54:19,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:19,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997961101] [2022-07-19 21:54:19,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:19,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52191078] [2022-07-19 21:54:19,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52191078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:19,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:54:19,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:54:19,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720675032] [2022-07-19 21:54:19,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:19,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:54:19,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:19,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:54:19,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:54:19,549 INFO L87 Difference]: Start difference. First operand 256 states and 356 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-07-19 21:54:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:19,608 INFO L93 Difference]: Finished difference Result 428 states and 630 transitions. [2022-07-19 21:54:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:54:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 [2022-07-19 21:54:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:19,611 INFO L225 Difference]: With dead ends: 428 [2022-07-19 21:54:19,611 INFO L226 Difference]: Without dead ends: 261 [2022-07-19 21:54:19,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:54:19,613 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 7 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 709 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 [2022-07-19 21:54:19,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 709 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:54:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-19 21:54:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2022-07-19 21:54:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 156 states have (on average 1.1730769230769231) internal successors, (183), 160 states have internal predecessors, (183), 74 states have call successors, (74), 25 states have call predecessors, (74), 27 states have return successors, (101), 72 states have call predecessors, (101), 73 states have call successors, (101) [2022-07-19 21:54:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 358 transitions. [2022-07-19 21:54:19,634 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 358 transitions. Word has length 144 [2022-07-19 21:54:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:19,635 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 358 transitions. [2022-07-19 21:54:19,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2022-07-19 21:54:19,635 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 358 transitions. [2022-07-19 21:54:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 21:54:19,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:19,637 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, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:19,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:19,863 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 [2022-07-19 21:54:19,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1971620744, now seen corresponding path program 1 times [2022-07-19 21:54:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:19,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421654192] [2022-07-19 21:54:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:19,924 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:19,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825610504] [2022-07-19 21:54:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:19,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:19,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:19,927 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) [2022-07-19 21:54:19,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:54:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:20,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-19 21:54:20,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:20,398 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 [2022-07-19 21:54:20,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:54:20,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 15 [2022-07-19 21:54:24,672 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:54:24,672 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 45 treesize of output 32 [2022-07-19 21:54:24,736 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-19 21:54:24,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-19 21:54:24,896 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_649 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_649))) is different from true [2022-07-19 21:54:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-19 21:54:33,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:33,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:33,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421654192] [2022-07-19 21:54:33,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:33,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825610504] [2022-07-19 21:54:33,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825610504] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:33,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:33,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-19 21:54:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430277005] [2022-07-19 21:54:33,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:54:33,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:54:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=386, Unknown=19, NotChecked=40, Total=506 [2022-07-19 21:54:33,366 INFO L87 Difference]: Start difference. First operand 258 states and 358 transitions. Second operand has 22 states, 20 states have (on average 3.3) internal successors, (66), 18 states have internal predecessors, (66), 8 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-19 21:54:38,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:38,338 INFO L93 Difference]: Finished difference Result 503 states and 768 transitions. [2022-07-19 21:54:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:54:38,338 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 18 states have internal predecessors, (66), 8 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 150 [2022-07-19 21:54:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:38,341 INFO L225 Difference]: With dead ends: 503 [2022-07-19 21:54:38,341 INFO L226 Difference]: Without dead ends: 334 [2022-07-19 21:54:38,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 221 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=86, Invalid=590, Unknown=30, NotChecked=50, Total=756 [2022-07-19 21:54:38,343 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 229 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1496 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1530 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 913 Invalid, 0 Unknown, 1496 Unchecked, 0.8s Time] [2022-07-19 21:54:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-19 21:54:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 266. [2022-07-19 21:54:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 161 states have (on average 1.1677018633540373) internal successors, (188), 166 states have internal predecessors, (188), 75 states have call successors, (75), 26 states have call predecessors, (75), 29 states have return successors, (103), 73 states have call predecessors, (103), 74 states have call successors, (103) [2022-07-19 21:54:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 366 transitions. [2022-07-19 21:54:38,367 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 366 transitions. Word has length 150 [2022-07-19 21:54:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:38,368 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 366 transitions. [2022-07-19 21:54:38,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 18 states have internal predecessors, (66), 8 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-19 21:54:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 366 transitions. [2022-07-19 21:54:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 21:54:38,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:38,370 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] [2022-07-19 21:54:38,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 21:54:38,583 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 [2022-07-19 21:54:38,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:38,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash 19454240, now seen corresponding path program 1 times [2022-07-19 21:54:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:38,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696178652] [2022-07-19 21:54:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:38,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:38,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207809809] [2022-07-19 21:54:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:38,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:38,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:38,659 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) [2022-07-19 21:54:38,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:54:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:39,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-19 21:54:39,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-19 21:54:39,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:54:39,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:39,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696178652] [2022-07-19 21:54:39,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:39,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207809809] [2022-07-19 21:54:39,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207809809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:39,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:54:39,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 21:54:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628906794] [2022-07-19 21:54:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:39,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:54:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:39,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:54:39,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:54:39,229 INFO L87 Difference]: Start difference. First operand 266 states and 366 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) [2022-07-19 21:54:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:39,500 INFO L93 Difference]: Finished difference Result 429 states and 621 transitions. [2022-07-19 21:54:39,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:54:39,501 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 [2022-07-19 21:54:39,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:39,503 INFO L225 Difference]: With dead ends: 429 [2022-07-19 21:54:39,504 INFO L226 Difference]: Without dead ends: 277 [2022-07-19 21:54:39,504 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 [2022-07-19 21:54:39,505 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 12 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:39,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2859 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:54:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-19 21:54:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2022-07-19 21:54:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 173 states have internal predecessors, (195), 75 states have call successors, (75), 26 states have call predecessors, (75), 30 states have return successors, (118), 73 states have call predecessors, (118), 74 states have call successors, (118) [2022-07-19 21:54:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 388 transitions. [2022-07-19 21:54:39,530 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 388 transitions. Word has length 150 [2022-07-19 21:54:39,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:39,532 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 388 transitions. [2022-07-19 21:54:39,532 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) [2022-07-19 21:54:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 388 transitions. [2022-07-19 21:54:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 21:54:39,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:39,536 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:39,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 21:54:39,759 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 [2022-07-19 21:54:39,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash -277020127, now seen corresponding path program 1 times [2022-07-19 21:54:39,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:39,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3603331] [2022-07-19 21:54:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:39,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:39,825 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:39,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188331051] [2022-07-19 21:54:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:39,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:39,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:39,828 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) [2022-07-19 21:54:39,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:54:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:40,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-19 21:54:40,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 21:54:40,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:54:40,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:40,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3603331] [2022-07-19 21:54:40,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:40,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188331051] [2022-07-19 21:54:40,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188331051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:40,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:54:40,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 21:54:40,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283614278] [2022-07-19 21:54:40,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:40,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:54:40,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:54:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:54:40,386 INFO L87 Difference]: Start difference. First operand 273 states and 388 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (24), 2 states have call predecessors, (24), 6 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-19 21:54:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:40,621 INFO L93 Difference]: Finished difference Result 439 states and 635 transitions. [2022-07-19 21:54:40,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:54:40,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (24), 2 states have call predecessors, (24), 6 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) Word has length 167 [2022-07-19 21:54:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:40,624 INFO L225 Difference]: With dead ends: 439 [2022-07-19 21:54:40,624 INFO L226 Difference]: Without dead ends: 273 [2022-07-19 21:54:40,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:54:40,627 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 11 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:40,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2635 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:54:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-07-19 21:54:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-07-19 21:54:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 173 states have internal predecessors, (195), 75 states have call successors, (75), 26 states have call predecessors, (75), 30 states have return successors, (116), 73 states have call predecessors, (116), 74 states have call successors, (116) [2022-07-19 21:54:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 386 transitions. [2022-07-19 21:54:40,650 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 386 transitions. Word has length 167 [2022-07-19 21:54:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:40,650 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 386 transitions. [2022-07-19 21:54:40,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (24), 2 states have call predecessors, (24), 6 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-19 21:54:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 386 transitions. [2022-07-19 21:54:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 21:54:40,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:40,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:40,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:40,871 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 [2022-07-19 21:54:40,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:40,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash 962711242, now seen corresponding path program 2 times [2022-07-19 21:54:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233786632] [2022-07-19 21:54:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:40,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:40,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:40,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523017431] [2022-07-19 21:54:40,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:54:40,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:40,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:40,936 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) [2022-07-19 21:54:40,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 21:54:41,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:54:41,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:54:41,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-19 21:54:41,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:41,829 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 [2022-07-19 21:54:41,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:54:41,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 21:54:42,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 21:54:42,175 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:54:42,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2022-07-19 21:54:42,214 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-19 21:54:42,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-07-19 21:54:42,335 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1040 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1040))) is different from true [2022-07-19 21:54:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-19 21:54:42,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:42,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:42,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233786632] [2022-07-19 21:54:42,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:42,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523017431] [2022-07-19 21:54:42,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523017431] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:42,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:42,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-19 21:54:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108533655] [2022-07-19 21:54:42,740 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:42,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:54:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:54:42,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=4, NotChecked=40, Total=506 [2022-07-19 21:54:42,741 INFO L87 Difference]: Start difference. First operand 273 states and 386 transitions. Second operand has 22 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-07-19 21:54:43,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:43,788 INFO L93 Difference]: Finished difference Result 452 states and 649 transitions. [2022-07-19 21:54:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:54:43,789 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 161 [2022-07-19 21:54:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:43,791 INFO L225 Difference]: With dead ends: 452 [2022-07-19 21:54:43,791 INFO L226 Difference]: Without dead ends: 276 [2022-07-19 21:54:43,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 237 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=699, Unknown=12, NotChecked=54, Total=870 [2022-07-19 21:54:43,793 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 98 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 797 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:43,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1215 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1241 Invalid, 0 Unknown, 797 Unchecked, 0.9s Time] [2022-07-19 21:54:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-19 21:54:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2022-07-19 21:54:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 172 states have internal predecessors, (195), 74 states have call successors, (74), 27 states have call predecessors, (74), 30 states have return successors, (112), 72 states have call predecessors, (112), 73 states have call successors, (112) [2022-07-19 21:54:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 381 transitions. [2022-07-19 21:54:43,810 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 381 transitions. Word has length 161 [2022-07-19 21:54:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:43,811 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 381 transitions. [2022-07-19 21:54:43,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-07-19 21:54:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 381 transitions. [2022-07-19 21:54:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 21:54:43,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:43,824 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] [2022-07-19 21:54:43,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:44,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 21:54:44,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1101236825, now seen corresponding path program 1 times [2022-07-19 21:54:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:44,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878771237] [2022-07-19 21:54:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:44,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:44,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:44,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436780255] [2022-07-19 21:54:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:44,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:44,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:44,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:44,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 21:54:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:44,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-19 21:54:44,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:44,763 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 [2022-07-19 21:54:44,766 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 [2022-07-19 21:54:45,133 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1181 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1181))) (exists ((v_ArrVal_1182 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1182) |c_#memory_$Pointer$.offset|)))) is different from true [2022-07-19 21:54:45,477 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:54:45,478 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 14 treesize of output 20 [2022-07-19 21:54:45,489 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:54:45,489 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 14 treesize of output 20 [2022-07-19 21:54:45,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:54:45,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2022-07-19 21:54:45,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:54:45,644 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:54:45,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2022-07-19 21:54:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 113 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 21:54:45,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:46,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:46,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878771237] [2022-07-19 21:54:46,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:46,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436780255] [2022-07-19 21:54:46,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436780255] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:46,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:46,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-19 21:54:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034225993] [2022-07-19 21:54:46,548 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:46,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:54:46,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:54:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1323, Unknown=44, NotChecked=74, Total=1560 [2022-07-19 21:54:46,549 INFO L87 Difference]: Start difference. First operand 272 states and 381 transitions. Second operand has 27 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 11 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2022-07-19 21:54:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:49,177 INFO L93 Difference]: Finished difference Result 504 states and 740 transitions. [2022-07-19 21:54:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-19 21:54:49,177 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 11 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) Word has length 144 [2022-07-19 21:54:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:49,180 INFO L225 Difference]: With dead ends: 504 [2022-07-19 21:54:49,180 INFO L226 Difference]: Without dead ends: 332 [2022-07-19 21:54:49,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 172 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=292, Invalid=3193, Unknown=59, NotChecked=116, Total=3660 [2022-07-19 21:54:49,182 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 139 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 4092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1305 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:49,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 2309 Invalid, 4092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2690 Invalid, 0 Unknown, 1305 Unchecked, 1.9s Time] [2022-07-19 21:54:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-19 21:54:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 297. [2022-07-19 21:54:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 182 states have (on average 1.1538461538461537) internal successors, (210), 188 states have internal predecessors, (210), 82 states have call successors, (82), 31 states have call predecessors, (82), 32 states have return successors, (135), 77 states have call predecessors, (135), 81 states have call successors, (135) [2022-07-19 21:54:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2022-07-19 21:54:49,210 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 144 [2022-07-19 21:54:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:49,211 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2022-07-19 21:54:49,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 11 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2022-07-19 21:54:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2022-07-19 21:54:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 21:54:49,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:49,213 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, 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] [2022-07-19 21:54:49,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:49,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 21:54:49,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:49,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash -140706377, now seen corresponding path program 2 times [2022-07-19 21:54:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:49,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504487505] [2022-07-19 21:54:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:49,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:49,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:49,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544947109] [2022-07-19 21:54:49,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:54:49,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:49,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:49,516 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:49,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 21:54:50,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:54:50,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:54:50,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 21:54:50,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-19 21:54:50,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:54:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504487505] [2022-07-19 21:54:50,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544947109] [2022-07-19 21:54:50,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544947109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:50,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:54:50,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 21:54:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133726922] [2022-07-19 21:54:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:50,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:54:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:54:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:54:50,566 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 21:54:50,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:50,805 INFO L93 Difference]: Finished difference Result 483 states and 707 transitions. [2022-07-19 21:54:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:54:50,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2022-07-19 21:54:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:50,808 INFO L225 Difference]: With dead ends: 483 [2022-07-19 21:54:50,808 INFO L226 Difference]: Without dead ends: 278 [2022-07-19 21:54:50,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:54:50,810 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 11 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:50,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2635 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:54:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-19 21:54:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 275. [2022-07-19 21:54:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 169 states have (on average 1.1597633136094674) internal successors, (196), 174 states have internal predecessors, (196), 75 states have call successors, (75), 28 states have call predecessors, (75), 30 states have return successors, (111), 72 states have call predecessors, (111), 74 states have call successors, (111) [2022-07-19 21:54:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 382 transitions. [2022-07-19 21:54:50,829 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 382 transitions. Word has length 156 [2022-07-19 21:54:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:50,829 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 382 transitions. [2022-07-19 21:54:50,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 21:54:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 382 transitions. [2022-07-19 21:54:50,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 21:54:50,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:50,831 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] [2022-07-19 21:54:50,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:51,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 21:54:51,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2021936067, now seen corresponding path program 1 times [2022-07-19 21:54:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:51,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908363785] [2022-07-19 21:54:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:51,110 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:51,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839792979] [2022-07-19 21:54:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:51,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:51,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:51,112 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:51,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 21:54:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-19 21:54:51,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:51,594 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 [2022-07-19 21:54:55,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:55,965 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 [2022-07-19 21:54:55,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:55,973 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 [2022-07-19 21:54:57,088 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1442 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1442))) (exists ((v_ArrVal_1443 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1443)))) is different from true [2022-07-19 21:54:57,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:57,371 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 16 treesize of output 18 [2022-07-19 21:54:57,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:57,376 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 16 treesize of output 18 [2022-07-19 21:54:57,378 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-19 21:54:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-19 21:54:57,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:57,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:57,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908363785] [2022-07-19 21:54:57,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:57,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839792979] [2022-07-19 21:54:57,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839792979] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:57,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:57,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-19 21:54:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939155325] [2022-07-19 21:54:57,688 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:57,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:54:57,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:54:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=192, Unknown=12, NotChecked=28, Total=272 [2022-07-19 21:54:57,689 INFO L87 Difference]: Start difference. First operand 275 states and 382 transitions. Second operand has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 21:55:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:00,294 INFO L93 Difference]: Finished difference Result 460 states and 680 transitions. [2022-07-19 21:55:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:55:00,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 146 [2022-07-19 21:55:00,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:00,297 INFO L225 Difference]: With dead ends: 460 [2022-07-19 21:55:00,297 INFO L226 Difference]: Without dead ends: 284 [2022-07-19 21:55:00,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=55, Invalid=275, Unknown=16, NotChecked=34, Total=380 [2022-07-19 21:55:00,299 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 130 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1423 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:00,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 828 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 517 Invalid, 0 Unknown, 1423 Unchecked, 0.4s Time] [2022-07-19 21:55:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-19 21:55:00,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2022-07-19 21:55:00,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 173 states have (on average 1.1618497109826589) internal successors, (201), 179 states have internal predecessors, (201), 75 states have call successors, (75), 28 states have call predecessors, (75), 31 states have return successors, (128), 72 states have call predecessors, (128), 74 states have call successors, (128) [2022-07-19 21:55:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 404 transitions. [2022-07-19 21:55:00,319 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 404 transitions. Word has length 146 [2022-07-19 21:55:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:00,319 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 404 transitions. [2022-07-19 21:55:00,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 21:55:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 404 transitions. [2022-07-19 21:55:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 21:55:00,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:00,322 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] [2022-07-19 21:55:00,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:00,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 21:55:00,541 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash -124439301, now seen corresponding path program 1 times [2022-07-19 21:55:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:00,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804384781] [2022-07-19 21:55:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:00,614 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:55:00,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998231061] [2022-07-19 21:55:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:00,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:00,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:00,616 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:00,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 21:55:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:55:01,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-19 21:55:01,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:01,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:01,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804384781] [2022-07-19 21:55:01,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:55:01,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998231061] [2022-07-19 21:55:01,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998231061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:01,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:01,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:55:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853319214] [2022-07-19 21:55:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:01,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:55:01,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:55:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:01,223 INFO L87 Difference]: Start difference. First operand 280 states and 404 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-07-19 21:55:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:01,489 INFO L93 Difference]: Finished difference Result 471 states and 739 transitions. [2022-07-19 21:55:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:55:01,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 146 [2022-07-19 21:55:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:01,492 INFO L225 Difference]: With dead ends: 471 [2022-07-19 21:55:01,492 INFO L226 Difference]: Without dead ends: 290 [2022-07-19 21:55:01,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:55:01,494 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 16 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:01,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 866 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:55:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-07-19 21:55:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 281. [2022-07-19 21:55:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 174 states have (on average 1.1551724137931034) internal successors, (201), 180 states have internal predecessors, (201), 75 states have call successors, (75), 28 states have call predecessors, (75), 31 states have return successors, (128), 72 states have call predecessors, (128), 74 states have call successors, (128) [2022-07-19 21:55:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 404 transitions. [2022-07-19 21:55:01,517 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 404 transitions. Word has length 146 [2022-07-19 21:55:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:01,517 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 404 transitions. [2022-07-19 21:55:01,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-07-19 21:55:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 404 transitions. [2022-07-19 21:55:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 21:55:01,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:01,519 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:01,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-19 21:55:01,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 21:55:01,741 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:01,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1117519482, now seen corresponding path program 1 times [2022-07-19 21:55:01,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:01,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108343257] [2022-07-19 21:55:01,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:01,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:01,790 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:55:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277588124] [2022-07-19 21:55:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:01,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:01,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:01,792 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:01,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 21:55:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-19 21:55:02,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:02,737 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1708 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1708))) (exists ((v_ArrVal_1709 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1709) |c_#memory_$Pointer$.offset|)))) is different from true [2022-07-19 21:55:03,024 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-19 21:55:03,025 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 16 treesize of output 16 [2022-07-19 21:55:03,035 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-07-19 21:55:03,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-19 21:55:03,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-19 21:55:05,092 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((v_aws_array_list_length_~list.offset_BEFORE_CALL_9 Int) (v_aws_array_list_length_~list.base_BEFORE_CALL_11 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_array_list_length_~list.base_BEFORE_CALL_11) (+ v_aws_array_list_length_~list.offset_BEFORE_CALL_9 32)) 0))) (exists ((v_aws_array_list_length_~list.offset_BEFORE_CALL_9 Int) (v_aws_array_list_length_~list.base_BEFORE_CALL_11 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_array_list_length_~list.base_BEFORE_CALL_11) (+ v_aws_array_list_length_~list.offset_BEFORE_CALL_9 32)) 0)))) is different from true [2022-07-19 21:55:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 106 proven. 6 refuted. 4 times theorem prover too weak. 47 trivial. 11 not checked. [2022-07-19 21:55:05,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:55:06,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:06,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108343257] [2022-07-19 21:55:06,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:55:06,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277588124] [2022-07-19 21:55:06,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277588124] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:06,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:06,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-19 21:55:06,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194412728] [2022-07-19 21:55:06,131 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:55:06,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:55:06,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:55:06,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=496, Unknown=30, NotChecked=94, Total=702 [2022-07-19 21:55:06,132 INFO L87 Difference]: Start difference. First operand 281 states and 404 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 8 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-19 21:55:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:33,705 INFO L93 Difference]: Finished difference Result 495 states and 733 transitions. [2022-07-19 21:55:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:55:33,706 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 8 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) Word has length 152 [2022-07-19 21:55:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:33,709 INFO L225 Difference]: With dead ends: 495 [2022-07-19 21:55:33,709 INFO L226 Difference]: Without dead ends: 323 [2022-07-19 21:55:33,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 146 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=186, Invalid=886, Unknown=58, NotChecked=130, Total=1260 [2022-07-19 21:55:33,711 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 119 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1617 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:33,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1465 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1678 Invalid, 0 Unknown, 1617 Unchecked, 1.7s Time] [2022-07-19 21:55:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-19 21:55:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 307. [2022-07-19 21:55:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 189 states have (on average 1.1481481481481481) internal successors, (217), 196 states have internal predecessors, (217), 82 states have call successors, (82), 31 states have call predecessors, (82), 35 states have return successors, (153), 79 states have call predecessors, (153), 81 states have call successors, (153) [2022-07-19 21:55:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 452 transitions. [2022-07-19 21:55:33,733 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 452 transitions. Word has length 152 [2022-07-19 21:55:33,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:33,734 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 452 transitions. [2022-07-19 21:55:33,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 8 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-19 21:55:33,734 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 452 transitions. [2022-07-19 21:55:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 21:55:33,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:33,736 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:33,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:33,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:33,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1755682577, now seen corresponding path program 1 times [2022-07-19 21:55:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:33,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596644102] [2022-07-19 21:55:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:34,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:55:34,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511887295] [2022-07-19 21:55:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:34,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:34,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:34,040 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:34,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 21:55:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:34,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:55:34,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 21:55:34,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:34,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:34,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596644102] [2022-07-19 21:55:34,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:55:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511887295] [2022-07-19 21:55:34,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511887295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:34,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:34,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:55:34,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150344179] [2022-07-19 21:55:34,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:34,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:55:34,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:55:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:34,627 INFO L87 Difference]: Start difference. First operand 307 states and 452 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-07-19 21:55:34,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:34,863 INFO L93 Difference]: Finished difference Result 522 states and 837 transitions. [2022-07-19 21:55:34,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:55:34,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 146 [2022-07-19 21:55:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:34,867 INFO L225 Difference]: With dead ends: 522 [2022-07-19 21:55:34,867 INFO L226 Difference]: Without dead ends: 311 [2022-07-19 21:55:34,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:55:34,870 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 7 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:34,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 903 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:55:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-19 21:55:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2022-07-19 21:55:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 189 states have (on average 1.1375661375661377) internal successors, (215), 196 states have internal predecessors, (215), 82 states have call successors, (82), 31 states have call predecessors, (82), 35 states have return successors, (153), 79 states have call predecessors, (153), 81 states have call successors, (153) [2022-07-19 21:55:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 450 transitions. [2022-07-19 21:55:34,901 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 450 transitions. Word has length 146 [2022-07-19 21:55:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:34,902 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 450 transitions. [2022-07-19 21:55:34,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-07-19 21:55:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 450 transitions. [2022-07-19 21:55:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 21:55:34,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:34,904 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:34,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:35,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 21:55:35,111 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1695279217, now seen corresponding path program 1 times [2022-07-19 21:55:35,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:35,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029403977] [2022-07-19 21:55:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:35,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:35,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:55:35,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560052538] [2022-07-19 21:55:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:35,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:35,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:35,170 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:35,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 21:55:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:35,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 167 conjunts are in the unsatisfiable core [2022-07-19 21:55:35,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:36,111 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1979 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1979) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1978 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1978) |c_#memory_$Pointer$.offset|)))) is different from true [2022-07-19 21:55:36,458 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:55:36,458 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 14 treesize of output 20 [2022-07-19 21:55:36,475 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:55:36,476 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 14 treesize of output 20 [2022-07-19 21:55:36,868 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1980 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1980) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1981 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1981) |c_#memory_$Pointer$.offset|)))) is different from true [2022-07-19 21:55:37,295 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:55:37,296 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 14 treesize of output 20 [2022-07-19 21:55:37,313 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:55:37,314 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 14 treesize of output 20 [2022-07-19 21:55:39,564 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1982 Int) (v_ArrVal_1985 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1985)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1982))))) is different from true [2022-07-19 21:56:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 94 proven. 27 refuted. 0 times theorem prover too weak. 44 trivial. 9 not checked. [2022-07-19 21:56:10,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:56:12,975 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_106| Int) (v_ArrVal_1998 Int) (v_ArrVal_1999 Int)) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_106| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_106|) 0 v_ArrVal_1999)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_106| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_106|) 0 v_ArrVal_1998)) c_aws_array_list_length_~list.base) .cse0) 0))))) is different from false [2022-07-19 21:56:12,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:12,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029403977] [2022-07-19 21:56:12,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:56:12,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560052538] [2022-07-19 21:56:12,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560052538] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:12,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:56:12,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2022-07-19 21:56:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739423884] [2022-07-19 21:56:12,978 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:56:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-19 21:56:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-19 21:56:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1284, Unknown=98, NotChecked=308, Total=1806 [2022-07-19 21:56:12,979 INFO L87 Difference]: Start difference. First operand 307 states and 450 transitions. Second operand has 39 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 14 states have call successors, (22), 6 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2022-07-19 21:56:13,292 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1979 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1979) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1978 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1978) |c_#memory_$Pointer$.offset|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1982 Int) (v_ArrVal_1985 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1985)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1982))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1980 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1980) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1981 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1981) |c_#memory_$Pointer$.offset|))))) is different from true [2022-07-19 21:56:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:33,404 INFO L93 Difference]: Finished difference Result 514 states and 771 transitions. [2022-07-19 21:56:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-19 21:56:33,406 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 14 states have call successors, (22), 6 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 146 [2022-07-19 21:56:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:33,408 INFO L225 Difference]: With dead ends: 514 [2022-07-19 21:56:33,408 INFO L226 Difference]: Without dead ends: 350 [2022-07-19 21:56:33,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 54.7s TimeCoverageRelationStatistics Valid=224, Invalid=2500, Unknown=158, NotChecked=540, Total=3422 [2022-07-19 21:56:33,410 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 122 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 5420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3095 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:33,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2806 Invalid, 5420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2242 Invalid, 0 Unknown, 3095 Unchecked, 1.8s Time] [2022-07-19 21:56:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-19 21:56:33,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 314. [2022-07-19 21:56:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 192 states have (on average 1.1354166666666667) internal successors, (218), 199 states have internal predecessors, (218), 85 states have call successors, (85), 31 states have call predecessors, (85), 36 states have return successors, (159), 83 states have call predecessors, (159), 84 states have call successors, (159) [2022-07-19 21:56:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 462 transitions. [2022-07-19 21:56:33,433 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 462 transitions. Word has length 146 [2022-07-19 21:56:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:33,434 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 462 transitions. [2022-07-19 21:56:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 14 states have call successors, (22), 6 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2022-07-19 21:56:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 462 transitions. [2022-07-19 21:56:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 21:56:33,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:33,436 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:33,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 21:56:33,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 21:56:33,655 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:33,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1381780218, now seen corresponding path program 2 times [2022-07-19 21:56:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:33,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345504231] [2022-07-19 21:56:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:33,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:56:33,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800034932] [2022-07-19 21:56:33,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:56:33,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:33,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:56:33,704 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:56:33,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 21:56:34,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:56:34,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:56:34,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 117 conjunts are in the unsatisfiable core [2022-07-19 21:56:34,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:56:36,724 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2120 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2121 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2120))) (= |c_#memory_$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_2121))))) is different from true