./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_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 b8e2b19500a9ff32f182f41fca1db48d6268985503aaacd0cb9efdaafa7d6419 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:11:58,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:11:58,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:11:58,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:11:58,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:11:58,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:11:58,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:11:58,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:11:58,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:11:58,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:11:58,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:11:58,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:11:58,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:11:58,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:11:58,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:11:58,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:11:58,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:11:58,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:11:58,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:11:58,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:11:58,662 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:11:58,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:11:58,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:11:58,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:11:58,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:11:58,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:11:58,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:11:58,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:11:58,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:11:58,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:11:58,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:11:58,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:11:58,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:11:58,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:11:58,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:11:58,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:11:58,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:11:58,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:11:58,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:11:58,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:11:58,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:11:58,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:11:58,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:11:58,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:11:58,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:11:58,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:11:58,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:11:58,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:11:58,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:11:58,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:11:58,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:11:58,702 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:11:58,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:11:58,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:11:58,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:11:58,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:11:58,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:11:58,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:11:58,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:11:58,704 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:11:58,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:11:58,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:11:58,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:11:58,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:11:58,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:11:58,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:11:58,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:11:58,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:11:58,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:11:58,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:11:58,707 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:11:58,707 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:11:58,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:11:58,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e2b19500a9ff32f182f41fca1db48d6268985503aaacd0cb9efdaafa7d6419 [2022-07-12 11:11:58,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:11:58,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:11:58,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:11:58,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:11:58,917 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:11:58,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i [2022-07-12 11:11:58,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea328fbb8/b8192702c796406ca50fe2f5469902fd/FLAG61f32a795 [2022-07-12 11:11:59,516 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:11:59,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i [2022-07-12 11:11:59,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea328fbb8/b8192702c796406ca50fe2f5469902fd/FLAG61f32a795 [2022-07-12 11:11:59,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea328fbb8/b8192702c796406ca50fe2f5469902fd [2022-07-12 11:11:59,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:11:59,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:11:59,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:11:59,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:11:59,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:11:59,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:11:59" (1/1) ... [2022-07-12 11:11:59,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28af4dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:11:59, skipping insertion in model container [2022-07-12 11:11:59,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:11:59" (1/1) ... [2022-07-12 11:11:59,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:11:59,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:12:00,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4501,4514] [2022-07-12 11:12:00,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4561,4574] [2022-07-12 11:12:00,479 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:12:00,512 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,514 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,515 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,517 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,526 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,529 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,530 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,531 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,696 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:12:00,697 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:12:00,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:12:00,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:12:00,699 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:12:00,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:12:00,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:12:00,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:12:00,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:12:00,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:12:00,773 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,774 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:12:00,817 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:12:00,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4501,4514] [2022-07-12 11:12:00,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4561,4574] [2022-07-12 11:12:00,901 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:12:00,912 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,928 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,929 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,936 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,937 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,937 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:12:00,972 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:12:00,973 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:12:00,973 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:12:00,979 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:12:00,979 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:12:00,979 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:12:00,980 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:12:00,980 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:12:00,980 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:12:00,997 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:00,997 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:12:01,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:12:01,147 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:12:01,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01 WrapperNode [2022-07-12 11:12:01,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:12:01,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:12:01,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:12:01,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:12:01,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,287 INFO L137 Inliner]: procedures = 689, calls = 1536, calls flagged for inlining = 55, calls inlined = 11, statements flattened = 692 [2022-07-12 11:12:01,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:12:01,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:12:01,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:12:01,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:12:01,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:12:01,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:12:01,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:12:01,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:12:01,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (1/1) ... [2022-07-12 11:12:01,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:12:01,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:01,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 11:12:01,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 11:12:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-12 11:12:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-12 11:12:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:12:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-12 11:12:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-12 11:12:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 11:12:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 11:12:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:12:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:12:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:12:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 11:12:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 11:12:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:12:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:12:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:12:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:12:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-12 11:12:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-12 11:12:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:12:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:12:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:12:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:12:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:12:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 11:12:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 11:12:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 11:12:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 11:12:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-12 11:12:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-12 11:12:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:12:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:12:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:12:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:12:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:12:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 11:12:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 11:12:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 11:12:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 11:12:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:12:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-07-12 11:12:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-07-12 11:12:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-12 11:12:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-12 11:12:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:12:01,678 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:12:01,680 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:12:02,207 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:12:02,214 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:12:02,215 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 11:12:02,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:12:02 BoogieIcfgContainer [2022-07-12 11:12:02,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:12:02,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:12:02,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:12:02,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:12:02,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:11:59" (1/3) ... [2022-07-12 11:12:02,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13180cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:12:02, skipping insertion in model container [2022-07-12 11:12:02,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:12:01" (2/3) ... [2022-07-12 11:12:02,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13180cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:12:02, skipping insertion in model container [2022-07-12 11:12:02,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:12:02" (3/3) ... [2022-07-12 11:12:02,223 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_capacity_harness.i [2022-07-12 11:12:02,233 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:12:02,233 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:12:02,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:12:02,280 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@55515a60, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@17997ad6 [2022-07-12 11:12:02,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:12:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 113 states have internal predecessors, (137), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-12 11:12:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 11:12:02,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:02,296 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:02,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:02,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash -626335346, now seen corresponding path program 1 times [2022-07-12 11:12:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:02,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107083921] [2022-07-12 11:12:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:12:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:12:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:12:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:12:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:12:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:12:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:12:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:12:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:12:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:12:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:12:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:12:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:12:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:12:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:12:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:12:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:12:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:12:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 11:12:02,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:02,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107083921] [2022-07-12 11:12:02,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107083921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:02,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:02,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:12:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301437293] [2022-07-12 11:12:02,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:02,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:12:02,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:12:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:02,994 INFO L87 Difference]: Start difference. First operand has 170 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 113 states have internal predecessors, (137), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 11:12:03,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:03,377 INFO L93 Difference]: Finished difference Result 383 states and 537 transitions. [2022-07-12 11:12:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:12:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 110 [2022-07-12 11:12:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:03,387 INFO L225 Difference]: With dead ends: 383 [2022-07-12 11:12:03,387 INFO L226 Difference]: Without dead ends: 219 [2022-07-12 11:12:03,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:03,393 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 200 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:03,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 330 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:12:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-12 11:12:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2022-07-12 11:12:03,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 109 states have internal predecessors, (130), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-12 11:12:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2022-07-12 11:12:03,430 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 110 [2022-07-12 11:12:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:03,431 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2022-07-12 11:12:03,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 11:12:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2022-07-12 11:12:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 11:12:03,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:03,434 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:12:03,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash 726994572, now seen corresponding path program 1 times [2022-07-12 11:12:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:03,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246210532] [2022-07-12 11:12:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:12:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:12:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:12:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:12:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:12:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:12:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:12:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:12:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:12:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:12:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:12:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:12:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:12:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:12:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:12:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:12:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:12:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:12:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:03,771 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 11:12:03,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:03,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246210532] [2022-07-12 11:12:03,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246210532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:03,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:03,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:12:03,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64222169] [2022-07-12 11:12:03,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:03,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:12:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:12:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:12:03,774 INFO L87 Difference]: Start difference. First operand 165 states and 209 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:12:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:04,265 INFO L93 Difference]: Finished difference Result 342 states and 453 transitions. [2022-07-12 11:12:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:12:04,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 110 [2022-07-12 11:12:04,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:04,268 INFO L225 Difference]: With dead ends: 342 [2022-07-12 11:12:04,268 INFO L226 Difference]: Without dead ends: 219 [2022-07-12 11:12:04,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:12:04,270 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 326 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:04,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 529 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:12:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-12 11:12:04,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2022-07-12 11:12:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 109 states have internal predecessors, (129), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-12 11:12:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 208 transitions. [2022-07-12 11:12:04,282 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 208 transitions. Word has length 110 [2022-07-12 11:12:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:04,282 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 208 transitions. [2022-07-12 11:12:04,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:12:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 208 transitions. [2022-07-12 11:12:04,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 11:12:04,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:04,284 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:04,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 11:12:04,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash 691144694, now seen corresponding path program 1 times [2022-07-12 11:12:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:04,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738021360] [2022-07-12 11:12:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:04,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:12:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:12:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:12:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:12:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:12:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:12:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:12:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:12:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:12:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:12:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:12:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:12:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:12:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:12:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:12:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:12:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:12:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:12:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:12:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 11:12:04,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:04,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738021360] [2022-07-12 11:12:04,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738021360] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:12:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140898934] [2022-07-12 11:12:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:04,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:04,648 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:04,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:12:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:04,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:12:04,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-12 11:12:05,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:05,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140898934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:05,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:12:05,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-12 11:12:05,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757267187] [2022-07-12 11:12:05,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:05,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:12:05,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:12:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:12:05,143 INFO L87 Difference]: Start difference. First operand 165 states and 208 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 11:12:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:05,249 INFO L93 Difference]: Finished difference Result 307 states and 396 transitions. [2022-07-12 11:12:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:12:05,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 118 [2022-07-12 11:12:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:05,251 INFO L225 Difference]: With dead ends: 307 [2022-07-12 11:12:05,252 INFO L226 Difference]: Without dead ends: 167 [2022-07-12 11:12:05,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:12:05,256 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 70 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:05,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1107 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-12 11:12:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-07-12 11:12:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 111 states have internal predecessors, (130), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-12 11:12:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 212 transitions. [2022-07-12 11:12:05,283 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 212 transitions. Word has length 118 [2022-07-12 11:12:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:05,285 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 212 transitions. [2022-07-12 11:12:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 11:12:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 212 transitions. [2022-07-12 11:12:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 11:12:05,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:05,289 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:05,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:05,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:05,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:05,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1403025034, now seen corresponding path program 1 times [2022-07-12 11:12:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:05,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430902127] [2022-07-12 11:12:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:05,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:05,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:05,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381841876] [2022-07-12 11:12:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:05,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:05,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:05,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:05,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:12:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:05,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:12:05,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-12 11:12:05,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:05,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430902127] [2022-07-12 11:12:05,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381841876] [2022-07-12 11:12:05,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381841876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:05,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:05,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:12:05,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946226248] [2022-07-12 11:12:05,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:05,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:12:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:12:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:12:05,933 INFO L87 Difference]: Start difference. First operand 167 states and 212 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 11:12:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:05,960 INFO L93 Difference]: Finished difference Result 295 states and 383 transitions. [2022-07-12 11:12:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:12:05,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2022-07-12 11:12:05,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:05,963 INFO L225 Difference]: With dead ends: 295 [2022-07-12 11:12:05,963 INFO L226 Difference]: Without dead ends: 172 [2022-07-12 11:12:05,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:05,965 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:05,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-07-12 11:12:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 169. [2022-07-12 11:12:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 113 states have internal predecessors, (132), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-12 11:12:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 214 transitions. [2022-07-12 11:12:05,985 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 214 transitions. Word has length 133 [2022-07-12 11:12:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:05,987 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 214 transitions. [2022-07-12 11:12:05,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 11:12:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 214 transitions. [2022-07-12 11:12:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 11:12:05,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:05,989 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:06,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:06,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-12 11:12:06,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:06,208 INFO L85 PathProgramCache]: Analyzing trace with hash -558549624, now seen corresponding path program 1 times [2022-07-12 11:12:06,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:06,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795505275] [2022-07-12 11:12:06,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:06,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:06,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:06,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648367590] [2022-07-12 11:12:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:06,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:06,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:06,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:06,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:12:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:06,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 11:12:06,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-12 11:12:06,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:06,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:06,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795505275] [2022-07-12 11:12:06,653 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:06,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648367590] [2022-07-12 11:12:06,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648367590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:06,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:06,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:12:06,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043299548] [2022-07-12 11:12:06,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:06,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:12:06,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:12:06,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:12:06,655 INFO L87 Difference]: Start difference. First operand 169 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 11:12:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:06,860 INFO L93 Difference]: Finished difference Result 297 states and 378 transitions. [2022-07-12 11:12:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:12:06,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 133 [2022-07-12 11:12:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:06,872 INFO L225 Difference]: With dead ends: 297 [2022-07-12 11:12:06,873 INFO L226 Difference]: Without dead ends: 169 [2022-07-12 11:12:06,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:12:06,874 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 242 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:06,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 765 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:12:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-12 11:12:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-07-12 11:12:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 113 states have internal predecessors, (131), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-12 11:12:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 213 transitions. [2022-07-12 11:12:06,881 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 213 transitions. Word has length 133 [2022-07-12 11:12:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:06,882 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 213 transitions. [2022-07-12 11:12:06,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 11:12:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 213 transitions. [2022-07-12 11:12:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 11:12:06,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:06,883 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:06,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:07,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:07,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1813374097, now seen corresponding path program 1 times [2022-07-12 11:12:07,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:07,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499949152] [2022-07-12 11:12:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:07,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:07,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:07,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308320750] [2022-07-12 11:12:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:07,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:07,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:07,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:07,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:12:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:07,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:12:07,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 11:12:07,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:07,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499949152] [2022-07-12 11:12:07,655 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:07,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308320750] [2022-07-12 11:12:07,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308320750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:07,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:07,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:12:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541293717] [2022-07-12 11:12:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:12:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:12:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:12:07,656 INFO L87 Difference]: Start difference. First operand 169 states and 213 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 11:12:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:07,798 INFO L93 Difference]: Finished difference Result 310 states and 395 transitions. [2022-07-12 11:12:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:12:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 149 [2022-07-12 11:12:07,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:07,800 INFO L225 Difference]: With dead ends: 310 [2022-07-12 11:12:07,800 INFO L226 Difference]: Without dead ends: 169 [2022-07-12 11:12:07,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:12:07,800 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 109 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:07,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1147 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-12 11:12:07,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-07-12 11:12:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 113 states have internal predecessors, (131), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-12 11:12:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 212 transitions. [2022-07-12 11:12:07,811 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 212 transitions. Word has length 149 [2022-07-12 11:12:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:07,812 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 212 transitions. [2022-07-12 11:12:07,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 11:12:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 212 transitions. [2022-07-12 11:12:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 11:12:07,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:07,814 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:07,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:08,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:08,031 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash 770964543, now seen corresponding path program 2 times [2022-07-12 11:12:08,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:08,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363335992] [2022-07-12 11:12:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:08,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:08,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:08,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10846274] [2022-07-12 11:12:08,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:12:08,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:08,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:08,084 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:08,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:12:08,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:12:08,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:12:08,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:12:08,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-12 11:12:08,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:08,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:08,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363335992] [2022-07-12 11:12:08,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:08,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10846274] [2022-07-12 11:12:08,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10846274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:08,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:08,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:12:08,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463301780] [2022-07-12 11:12:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:08,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:12:08,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:08,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:12:08,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:12:08,769 INFO L87 Difference]: Start difference. First operand 169 states and 212 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 11:12:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:08,849 INFO L93 Difference]: Finished difference Result 276 states and 344 transitions. [2022-07-12 11:12:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:12:08,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 164 [2022-07-12 11:12:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:08,851 INFO L225 Difference]: With dead ends: 276 [2022-07-12 11:12:08,851 INFO L226 Difference]: Without dead ends: 167 [2022-07-12 11:12:08,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:12:08,852 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 27 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:08,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 867 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-12 11:12:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-07-12 11:12:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 110 states have (on average 1.1727272727272726) internal successors, (129), 111 states have internal predecessors, (129), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-12 11:12:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 208 transitions. [2022-07-12 11:12:08,860 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 208 transitions. Word has length 164 [2022-07-12 11:12:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:08,860 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 208 transitions. [2022-07-12 11:12:08,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 11:12:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 208 transitions. [2022-07-12 11:12:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 11:12:08,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:08,862 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:08,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:09,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:09,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash -534191969, now seen corresponding path program 1 times [2022-07-12 11:12:09,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:09,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693762289] [2022-07-12 11:12:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:09,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:09,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178212355] [2022-07-12 11:12:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:09,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:09,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:09,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:09,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:12:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:09,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 11:12:09,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:12:09,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:09,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693762289] [2022-07-12 11:12:09,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:09,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178212355] [2022-07-12 11:12:09,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178212355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:09,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:09,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:12:09,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261259296] [2022-07-12 11:12:09,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:09,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:12:09,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:12:09,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:12:09,692 INFO L87 Difference]: Start difference. First operand 167 states and 208 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:09,885 INFO L93 Difference]: Finished difference Result 308 states and 389 transitions. [2022-07-12 11:12:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:12:09,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2022-07-12 11:12:09,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:09,887 INFO L225 Difference]: With dead ends: 308 [2022-07-12 11:12:09,887 INFO L226 Difference]: Without dead ends: 185 [2022-07-12 11:12:09,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:12:09,888 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 21 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:09,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 889 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-12 11:12:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2022-07-12 11:12:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 115 states have internal predecessors, (134), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-12 11:12:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 213 transitions. [2022-07-12 11:12:09,896 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 213 transitions. Word has length 194 [2022-07-12 11:12:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:09,896 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 213 transitions. [2022-07-12 11:12:09,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:09,896 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 213 transitions. [2022-07-12 11:12:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 11:12:09,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:09,898 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:09,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:10,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:10,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1304925535, now seen corresponding path program 1 times [2022-07-12 11:12:10,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:10,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511976378] [2022-07-12 11:12:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:10,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:10,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:10,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723199387] [2022-07-12 11:12:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:10,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:10,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:10,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:12:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:10,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:12:10,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:12:10,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:10,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511976378] [2022-07-12 11:12:10,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723199387] [2022-07-12 11:12:10,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723199387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:10,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:10,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:12:10,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193427096] [2022-07-12 11:12:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:10,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:12:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:12:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:12:10,607 INFO L87 Difference]: Start difference. First operand 171 states and 213 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:10,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:10,625 INFO L93 Difference]: Finished difference Result 302 states and 379 transitions. [2022-07-12 11:12:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:12:10,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2022-07-12 11:12:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:10,627 INFO L225 Difference]: With dead ends: 302 [2022-07-12 11:12:10,628 INFO L226 Difference]: Without dead ends: 175 [2022-07-12 11:12:10,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:10,630 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:10,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-12 11:12:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2022-07-12 11:12:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 117 states have internal predecessors, (136), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-12 11:12:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2022-07-12 11:12:10,658 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 194 [2022-07-12 11:12:10,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:10,658 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2022-07-12 11:12:10,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2022-07-12 11:12:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 11:12:10,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:10,660 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:10,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:10,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:10,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1891201757, now seen corresponding path program 1 times [2022-07-12 11:12:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:10,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192107574] [2022-07-12 11:12:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:10,935 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:10,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541548165] [2022-07-12 11:12:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:10,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:10,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:10,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:10,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:12:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:11,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-12 11:12:11,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:11,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-12 11:12:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:12:11,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:11,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:11,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192107574] [2022-07-12 11:12:11,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:11,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541548165] [2022-07-12 11:12:11,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541548165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:11,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:11,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:12:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466270362] [2022-07-12 11:12:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:12:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:12:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:12:11,545 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-12 11:12:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:11,878 INFO L93 Difference]: Finished difference Result 327 states and 415 transitions. [2022-07-12 11:12:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:12:11,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 194 [2022-07-12 11:12:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:11,880 INFO L225 Difference]: With dead ends: 327 [2022-07-12 11:12:11,880 INFO L226 Difference]: Without dead ends: 196 [2022-07-12 11:12:11,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:12:11,881 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 111 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:11,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1430 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:12:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-12 11:12:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 186. [2022-07-12 11:12:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 128 states have (on average 1.1796875) internal successors, (151), 129 states have internal predecessors, (151), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2022-07-12 11:12:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 234 transitions. [2022-07-12 11:12:11,890 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 234 transitions. Word has length 194 [2022-07-12 11:12:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:11,890 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 234 transitions. [2022-07-12 11:12:11,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-12 11:12:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 234 transitions. [2022-07-12 11:12:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 11:12:11,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:11,892 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:11,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:12,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 11:12:12,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1820193313, now seen corresponding path program 1 times [2022-07-12 11:12:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:12,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961419981] [2022-07-12 11:12:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:12,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:12,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:12,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378556268] [2022-07-12 11:12:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:12,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:12,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:12,180 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:12:12,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:12:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:12,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:12:12,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:12:12,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:12,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961419981] [2022-07-12 11:12:12,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:12,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378556268] [2022-07-12 11:12:12,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378556268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:12,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:12,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:12:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639444898] [2022-07-12 11:12:12,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:12,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:12:12,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:12,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:12:12,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:12,653 INFO L87 Difference]: Start difference. First operand 186 states and 234 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:12,679 INFO L93 Difference]: Finished difference Result 344 states and 437 transitions. [2022-07-12 11:12:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:12:12,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2022-07-12 11:12:12,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:12,681 INFO L225 Difference]: With dead ends: 344 [2022-07-12 11:12:12,681 INFO L226 Difference]: Without dead ends: 202 [2022-07-12 11:12:12,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:12:12,682 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 9 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:12,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 826 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-12 11:12:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2022-07-12 11:12:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 138 states have (on average 1.181159420289855) internal successors, (163), 139 states have internal predecessors, (163), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2022-07-12 11:12:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 246 transitions. [2022-07-12 11:12:12,690 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 246 transitions. Word has length 194 [2022-07-12 11:12:12,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:12,690 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 246 transitions. [2022-07-12 11:12:12,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 246 transitions. [2022-07-12 11:12:12,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-12 11:12:12,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:12,691 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:12,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:12,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1417700959, now seen corresponding path program 1 times [2022-07-12 11:12:12,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:12,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416007486] [2022-07-12 11:12:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:12,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:12,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227246502] [2022-07-12 11:12:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:12,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:12,964 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) [2022-07-12 11:12:12,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:12:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:13,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:12:13,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:12:13,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:13,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:13,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416007486] [2022-07-12 11:12:13,426 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:13,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227246502] [2022-07-12 11:12:13,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227246502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:13,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:13,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:12:13,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478446106] [2022-07-12 11:12:13,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:13,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:12:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:13,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:12:13,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:12:13,429 INFO L87 Difference]: Start difference. First operand 196 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:13,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:13,461 INFO L93 Difference]: Finished difference Result 344 states and 434 transitions. [2022-07-12 11:12:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:12:13,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2022-07-12 11:12:13,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:13,463 INFO L225 Difference]: With dead ends: 344 [2022-07-12 11:12:13,463 INFO L226 Difference]: Without dead ends: 192 [2022-07-12 11:12:13,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:13,464 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:13,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 606 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-12 11:12:13,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2022-07-12 11:12:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 131 states have internal predecessors, (151), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2022-07-12 11:12:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 234 transitions. [2022-07-12 11:12:13,471 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 234 transitions. Word has length 194 [2022-07-12 11:12:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:13,476 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 234 transitions. [2022-07-12 11:12:13,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 234 transitions. [2022-07-12 11:12:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-12 11:12:13,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:13,477 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:13,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:13,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 11:12:13,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash 904679995, now seen corresponding path program 1 times [2022-07-12 11:12:13,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:13,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778818039] [2022-07-12 11:12:13,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:13,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:13,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499699212] [2022-07-12 11:12:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:13,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:13,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:13,733 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) [2022-07-12 11:12:13,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:12:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:14,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:12:14,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:12:14,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:14,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:14,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778818039] [2022-07-12 11:12:14,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:14,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499699212] [2022-07-12 11:12:14,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499699212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:14,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:14,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:12:14,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600182543] [2022-07-12 11:12:14,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:14,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:12:14,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:14,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:12:14,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:14,240 INFO L87 Difference]: Start difference. First operand 188 states and 234 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:14,372 INFO L93 Difference]: Finished difference Result 332 states and 420 transitions. [2022-07-12 11:12:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:12:14,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 196 [2022-07-12 11:12:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:14,373 INFO L225 Difference]: With dead ends: 332 [2022-07-12 11:12:14,373 INFO L226 Difference]: Without dead ends: 188 [2022-07-12 11:12:14,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:12:14,374 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:14,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 751 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-12 11:12:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-07-12 11:12:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.1538461538461537) internal successors, (150), 131 states have internal predecessors, (150), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2022-07-12 11:12:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 233 transitions. [2022-07-12 11:12:14,381 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 233 transitions. Word has length 196 [2022-07-12 11:12:14,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:14,381 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 233 transitions. [2022-07-12 11:12:14,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 11:12:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 233 transitions. [2022-07-12 11:12:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-12 11:12:14,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:14,382 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:14,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:14,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 11:12:14,607 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:14,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:14,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1935720893, now seen corresponding path program 1 times [2022-07-12 11:12:14,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:14,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778210910] [2022-07-12 11:12:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:14,655 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:14,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487518669] [2022-07-12 11:12:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:14,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:14,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:14,657 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) [2022-07-12 11:12:14,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:12:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:15,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 122 conjunts are in the unsatisfiable core [2022-07-12 11:12:15,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:22,358 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (or (exists ((|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base_BEFORE_CALL_7| Int)) (and (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base_BEFORE_CALL_7|) 80) 0)) (not (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base_BEFORE_CALL_7|) 56) 18446744073709551616) 0)))) (exists ((|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base_BEFORE_CALL_7| Int)) (and (not (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base_BEFORE_CALL_7|) 56) 18446744073709551616) 0)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base_BEFORE_CALL_7|) 80) 0))))) (= |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset| 0) (let ((.cse0 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset| 80))) (or (not (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse0) 0)) (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse0) 0)))) (not (= 0 (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset|)) 18446744073709551616)))) is different from true [2022-07-12 11:12:22,580 INFO L356 Elim1Store]: treesize reduction 18, result has 73.1 percent of original size [2022-07-12 11:12:22,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 92 [2022-07-12 11:12:22,612 INFO L356 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2022-07-12 11:12:22,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 127 [2022-07-12 11:12:22,636 INFO L356 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2022-07-12 11:12:22,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 145 [2022-07-12 11:12:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 149 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 11:12:23,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:12:27,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:27,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778210910] [2022-07-12 11:12:27,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:27,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487518669] [2022-07-12 11:12:27,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487518669] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:12:27,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:12:27,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-12 11:12:27,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454699206] [2022-07-12 11:12:27,960 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:12:27,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 11:12:27,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 11:12:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=843, Unknown=2, NotChecked=58, Total=992 [2022-07-12 11:12:27,961 INFO L87 Difference]: Start difference. First operand 188 states and 233 transitions. Second operand has 23 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 9 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2022-07-12 11:12:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:30,999 INFO L93 Difference]: Finished difference Result 507 states and 622 transitions. [2022-07-12 11:12:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-12 11:12:31,000 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 9 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) Word has length 196 [2022-07-12 11:12:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:31,001 INFO L225 Difference]: With dead ends: 507 [2022-07-12 11:12:31,001 INFO L226 Difference]: Without dead ends: 377 [2022-07-12 11:12:31,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=346, Invalid=3078, Unknown=2, NotChecked=114, Total=3540 [2022-07-12 11:12:31,003 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 201 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 566 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:31,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 2213 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2380 Invalid, 0 Unknown, 566 Unchecked, 1.6s Time] [2022-07-12 11:12:31,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-12 11:12:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 307. [2022-07-12 11:12:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 224 states have (on average 1.15625) internal successors, (259), 228 states have internal predecessors, (259), 52 states have call successors, (52), 25 states have call predecessors, (52), 30 states have return successors, (61), 53 states have call predecessors, (61), 51 states have call successors, (61) [2022-07-12 11:12:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 372 transitions. [2022-07-12 11:12:31,018 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 372 transitions. Word has length 196 [2022-07-12 11:12:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:31,019 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 372 transitions. [2022-07-12 11:12:31,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.409090909090909) internal successors, (97), 21 states have internal predecessors, (97), 9 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2022-07-12 11:12:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 372 transitions. [2022-07-12 11:12:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-12 11:12:31,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:31,020 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:31,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 11:12:31,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 11:12:31,231 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:31,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash 247809849, now seen corresponding path program 1 times [2022-07-12 11:12:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:31,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921712941] [2022-07-12 11:12:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:31,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:31,282 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:31,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208947090] [2022-07-12 11:12:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:31,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:31,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:31,284 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) [2022-07-12 11:12:31,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 11:12:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:32,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 11:12:32,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:12:32,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:32,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:32,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921712941] [2022-07-12 11:12:32,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:32,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208947090] [2022-07-12 11:12:32,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208947090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:32,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:32,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:12:32,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999688337] [2022-07-12 11:12:32,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:32,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:12:32,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:32,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:12:32,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:12:32,059 INFO L87 Difference]: Start difference. First operand 307 states and 372 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:12:32,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:32,081 INFO L93 Difference]: Finished difference Result 503 states and 614 transitions. [2022-07-12 11:12:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:12:32,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 201 [2022-07-12 11:12:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:32,083 INFO L225 Difference]: With dead ends: 503 [2022-07-12 11:12:32,083 INFO L226 Difference]: Without dead ends: 317 [2022-07-12 11:12:32,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:12:32,084 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 7 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:32,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 603 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:12:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-12 11:12:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 309. [2022-07-12 11:12:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 226 states have (on average 1.154867256637168) internal successors, (261), 230 states have internal predecessors, (261), 52 states have call successors, (52), 25 states have call predecessors, (52), 30 states have return successors, (61), 53 states have call predecessors, (61), 51 states have call successors, (61) [2022-07-12 11:12:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 374 transitions. [2022-07-12 11:12:32,096 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 374 transitions. Word has length 201 [2022-07-12 11:12:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:32,096 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 374 transitions. [2022-07-12 11:12:32,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:12:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 374 transitions. [2022-07-12 11:12:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-12 11:12:32,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:32,097 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:32,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-12 11:12:32,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 11:12:32,311 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash 811020578, now seen corresponding path program 1 times [2022-07-12 11:12:32,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:32,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100944841] [2022-07-12 11:12:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:32,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:32,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:32,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95236004] [2022-07-12 11:12:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:32,355 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) [2022-07-12 11:12:32,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 11:12:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:32,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-12 11:12:32,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:12:32,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:12:32,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:12:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100944841] [2022-07-12 11:12:32,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:12:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95236004] [2022-07-12 11:12:32,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95236004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:12:32,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:12:32,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:12:32,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555180962] [2022-07-12 11:12:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:12:32,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:12:32,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:12:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:12:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:12:32,914 INFO L87 Difference]: Start difference. First operand 309 states and 374 transitions. Second operand has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 11:12:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:12:33,023 INFO L93 Difference]: Finished difference Result 499 states and 604 transitions. [2022-07-12 11:12:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:12:33,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 201 [2022-07-12 11:12:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:12:33,025 INFO L225 Difference]: With dead ends: 499 [2022-07-12 11:12:33,025 INFO L226 Difference]: Without dead ends: 316 [2022-07-12 11:12:33,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:12:33,026 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 4 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:12:33,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1706 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:12:33,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-12 11:12:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 309. [2022-07-12 11:12:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 226 states have (on average 1.1504424778761062) internal successors, (260), 230 states have internal predecessors, (260), 52 states have call successors, (52), 25 states have call predecessors, (52), 30 states have return successors, (61), 53 states have call predecessors, (61), 51 states have call successors, (61) [2022-07-12 11:12:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 373 transitions. [2022-07-12 11:12:33,041 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 373 transitions. Word has length 201 [2022-07-12 11:12:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:12:33,042 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 373 transitions. [2022-07-12 11:12:33,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 11:12:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 373 transitions. [2022-07-12 11:12:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-12 11:12:33,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:12:33,043 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:12:33,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-12 11:12:33,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:33,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:12:33,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:12:33,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1509739381, now seen corresponding path program 1 times [2022-07-12 11:12:33,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:12:33,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497111568] [2022-07-12 11:12:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:12:33,311 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:12:33,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293791190] [2022-07-12 11:12:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:12:33,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:12:33,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:12:33,313 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) [2022-07-12 11:12:33,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 11:12:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:12:33,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 215 conjunts are in the unsatisfiable core [2022-07-12 11:12:33,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:12:33,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:12:34,114 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 11:12:34,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:12:34,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:34,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:12:34,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:34,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-12 11:12:37,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:37,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:37,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:37,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-07-12 11:12:37,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:37,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:37,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:37,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-07-12 11:12:43,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:43,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:43,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:43,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-07-12 11:12:43,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:43,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-12 11:12:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:43,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:43,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:43,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-07-12 11:12:49,826 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2420 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2420) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2421 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2421))) (exists ((v_ArrVal_2422 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2422)))) is different from true [2022-07-12 11:12:54,527 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2425 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2424 Int) (v_ArrVal_2427 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2427))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2425)) (= |c_#memory_$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_2424))))) is different from true [2022-07-12 11:12:54,807 WARN L855 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_2425 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2424 Int) (v_ArrVal_2427 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2424))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2427))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2425))))) is different from true [2022-07-12 11:12:59,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,505 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 43 treesize of output 31 [2022-07-12 11:12:59,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,514 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 33 treesize of output 28 [2022-07-12 11:12:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,521 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 33 treesize of output 28 [2022-07-12 11:12:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-07-12 11:12:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:12:59,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-07-12 11:12:59,548 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:12:59,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-07-12 11:12:59,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-12 11:13:08,258 INFO L356 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-07-12 11:13:08,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 13 [2022-07-12 11:13:08,262 INFO L356 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-07-12 11:13:08,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2022-07-12 11:13:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 142 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 8 not checked. [2022-07-12 11:13:08,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:13:10,732 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_8| Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_8| Int)) (let ((.cse2 (+ 32 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_8|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_8|) .cse2)) (.cse0 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset| 80))) (or (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse0) .cse1)) (= .cse1 0) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_8|) .cse2) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse0))))))) (forall ((|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_8| Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_8| Int)) (let ((.cse4 (+ 32 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_8|))) (let ((.cse3 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset| 80)) (.cse5 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_8|) .cse4))) (or (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse3) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_8|) .cse4))) (not (= .cse5 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse3))) (= .cse5 0)))))) is different from false [2022-07-12 11:13:10,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:13:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497111568] [2022-07-12 11:13:10,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:13:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293791190] [2022-07-12 11:13:10,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293791190] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:13:10,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:13:10,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2022-07-12 11:13:10,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700901435] [2022-07-12 11:13:10,754 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:13:10,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-12 11:13:10,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:13:10,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-12 11:13:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2679, Unknown=92, NotChecked=436, Total=3422 [2022-07-12 11:13:10,755 INFO L87 Difference]: Start difference. First operand 309 states and 373 transitions. Second operand has 54 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 45 states have internal predecessors, (120), 18 states have call successors, (28), 12 states have call predecessors, (28), 17 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) [2022-07-12 11:13:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:13:26,857 INFO L93 Difference]: Finished difference Result 602 states and 750 transitions. [2022-07-12 11:13:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-12 11:13:26,858 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 45 states have internal predecessors, (120), 18 states have call successors, (28), 12 states have call predecessors, (28), 17 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) Word has length 203 [2022-07-12 11:13:26,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:13:26,860 INFO L225 Difference]: With dead ends: 602 [2022-07-12 11:13:26,860 INFO L226 Difference]: Without dead ends: 469 [2022-07-12 11:13:26,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 208 SyntacticMatches, 10 SemanticMatches, 80 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 50.0s TimeCoverageRelationStatistics Valid=391, Invalid=5475, Unknown=156, NotChecked=620, Total=6642 [2022-07-12 11:13:26,862 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 292 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 5159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2936 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:13:26,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1986 Invalid, 5159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1988 Invalid, 0 Unknown, 2936 Unchecked, 1.2s Time] [2022-07-12 11:13:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-07-12 11:13:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 374. [2022-07-12 11:13:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 275 states have (on average 1.1454545454545455) internal successors, (315), 281 states have internal predecessors, (315), 59 states have call successors, (59), 30 states have call predecessors, (59), 39 states have return successors, (82), 62 states have call predecessors, (82), 58 states have call successors, (82) [2022-07-12 11:13:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 456 transitions. [2022-07-12 11:13:26,878 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 456 transitions. Word has length 203 [2022-07-12 11:13:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:13:26,878 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 456 transitions. [2022-07-12 11:13:26,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 45 states have internal predecessors, (120), 18 states have call successors, (28), 12 states have call predecessors, (28), 17 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) [2022-07-12 11:13:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 456 transitions. [2022-07-12 11:13:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-12 11:13:26,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:13:26,880 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:13:26,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-12 11:13:27,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 11:13:27,095 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:13:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:13:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1873105828, now seen corresponding path program 1 times [2022-07-12 11:13:27,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:13:27,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204578317] [2022-07-12 11:13:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:13:27,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:13:27,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:13:27,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000608057] [2022-07-12 11:13:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:13:27,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:13:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:13:27,144 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) [2022-07-12 11:13:27,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 11:13:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:13:27,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-12 11:13:27,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:13:27,684 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 21 treesize of output 9 [2022-07-12 11:13:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:13:27,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:13:27,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:13:27,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204578317] [2022-07-12 11:13:27,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:13:27,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000608057] [2022-07-12 11:13:27,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000608057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:13:27,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:13:27,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 11:13:27,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046956277] [2022-07-12 11:13:27,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:13:27,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 11:13:27,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:13:27,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 11:13:27,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:13:27,867 INFO L87 Difference]: Start difference. First operand 374 states and 456 transitions. Second operand has 18 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 4 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-12 11:13:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:13:28,382 INFO L93 Difference]: Finished difference Result 656 states and 812 transitions. [2022-07-12 11:13:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 11:13:28,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 4 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) Word has length 217 [2022-07-12 11:13:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:13:28,386 INFO L225 Difference]: With dead ends: 656 [2022-07-12 11:13:28,387 INFO L226 Difference]: Without dead ends: 441 [2022-07-12 11:13:28,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:13:28,388 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 27 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3358 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:13:28,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3358 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:13:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-12 11:13:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 408. [2022-07-12 11:13:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 305 states have (on average 1.1475409836065573) internal successors, (350), 310 states have internal predecessors, (350), 59 states have call successors, (59), 30 states have call predecessors, (59), 43 states have return successors, (94), 67 states have call predecessors, (94), 58 states have call successors, (94) [2022-07-12 11:13:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 503 transitions. [2022-07-12 11:13:28,404 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 503 transitions. Word has length 217 [2022-07-12 11:13:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:13:28,405 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 503 transitions. [2022-07-12 11:13:28,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 4 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-12 11:13:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 503 transitions. [2022-07-12 11:13:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-12 11:13:28,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:13:28,407 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:13:28,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 11:13:28,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 11:13:28,623 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:13:28,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:13:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash 598718634, now seen corresponding path program 1 times [2022-07-12 11:13:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:13:28,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099163303] [2022-07-12 11:13:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:13:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:13:28,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:13:28,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452757403] [2022-07-12 11:13:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:13:28,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:13:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:13:28,694 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) [2022-07-12 11:13:28,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 11:13:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:13:29,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 236 conjunts are in the unsatisfiable core [2022-07-12 11:13:29,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:13:29,357 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 21 treesize of output 9 [2022-07-12 11:13:30,127 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2872 Int) (v_ArrVal_2870 (Array Int Int)) (v_ArrVal_2869 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2870) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2869)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2872)) |c_#memory_$Pointer$.base|)))) is different from true [2022-07-12 11:13:30,151 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2872 Int) (v_ArrVal_2870 (Array Int Int)) (v_ArrVal_2869 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2870) |c_#memory_int|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2869))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2872)))))) is different from true [2022-07-12 11:13:30,236 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-12 11:13:30,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 50 [2022-07-12 11:13:30,262 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-12 11:13:30,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 44 [2022-07-12 11:13:30,275 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:13:30,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-12 11:13:30,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-12 11:13:30,962 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-12 11:13:30,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2022-07-12 11:13:31,430 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:13:31,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 11:13:34,589 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 [2022-07-12 11:13:34,591 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 [2022-07-12 11:13:43,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:13:43,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:13:43,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2022-07-12 11:13:43,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:13:43,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:13:43,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2022-07-12 11:13:53,269 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2886 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2886)))) (exists ((v_ArrVal_2885 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2885)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-12 11:13:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 118 proven. 76 refuted. 0 times theorem prover too weak. 21 trivial. 25 not checked. [2022-07-12 11:13:55,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:13:56,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:13:56,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099163303] [2022-07-12 11:13:56,104 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:13:56,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452757403] [2022-07-12 11:13:56,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452757403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:13:56,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:13:56,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2022-07-12 11:13:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755335881] [2022-07-12 11:13:56,105 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:13:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-12 11:13:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:13:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-12 11:13:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2789, Unknown=15, NotChecked=324, Total=3306 [2022-07-12 11:13:56,107 INFO L87 Difference]: Start difference. First operand 408 states and 503 transitions. Second operand has 54 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 18 states have call successors, (31), 10 states have call predecessors, (31), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) [2022-07-12 11:13:59,152 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2886 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2886)))) (exists ((v_ArrVal_2885 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2885)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2872 Int) (v_ArrVal_2870 (Array Int Int)) (v_ArrVal_2869 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2870) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2869)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2872)) |c_#memory_$Pointer$.base|)))) is different from true [2022-07-12 11:14:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:14:21,346 INFO L93 Difference]: Finished difference Result 805 states and 992 transitions. [2022-07-12 11:14:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-12 11:14:21,347 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 18 states have call successors, (31), 10 states have call predecessors, (31), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) Word has length 211 [2022-07-12 11:14:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:14:21,350 INFO L225 Difference]: With dead ends: 805 [2022-07-12 11:14:21,350 INFO L226 Difference]: Without dead ends: 655 [2022-07-12 11:14:21,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 185 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2178 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=455, Invalid=7538, Unknown=33, NotChecked=716, Total=8742 [2022-07-12 11:14:21,353 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 299 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 4208 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 7322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 4208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2889 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:14:21,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 3168 Invalid, 7322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 4208 Invalid, 0 Unknown, 2889 Unchecked, 2.7s Time] [2022-07-12 11:14:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-07-12 11:14:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 624. [2022-07-12 11:14:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 471 states have (on average 1.1401273885350318) internal successors, (537), 480 states have internal predecessors, (537), 84 states have call successors, (84), 46 states have call predecessors, (84), 68 states have return successors, (146), 97 states have call predecessors, (146), 83 states have call successors, (146) [2022-07-12 11:14:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 767 transitions. [2022-07-12 11:14:21,377 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 767 transitions. Word has length 211 [2022-07-12 11:14:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:14:21,378 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 767 transitions. [2022-07-12 11:14:21,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 18 states have call successors, (31), 10 states have call predecessors, (31), 16 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) [2022-07-12 11:14:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 767 transitions. [2022-07-12 11:14:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 11:14:21,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:14:21,380 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:14:21,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 11:14:21,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:14:21,596 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:14:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:14:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1962485261, now seen corresponding path program 2 times [2022-07-12 11:14:21,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:14:21,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606271853] [2022-07-12 11:14:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:14:21,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:14:21,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:14:21,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71931829] [2022-07-12 11:14:21,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:14:21,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:14:21,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:14:21,646 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:14:21,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 11:14:22,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:14:22,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:14:22,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 3021 conjuncts, 152 conjunts are in the unsatisfiable core [2022-07-12 11:14:22,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:14:22,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:14:23,115 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 11:14:23,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:14:23,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:14:23,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:14:25,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:14:25,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:14:25,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:14:25,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:14:27,371 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3119 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3119) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3118 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3118)))) is different from true [2022-07-12 11:14:29,590 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3122 Int) (v_ArrVal_3123 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3123))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3122)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-12 11:14:31,602 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3122 Int) (v_ArrVal_3123 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3122)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3123))))) is different from true [2022-07-12 11:14:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 150 proven. 13 refuted. 0 times theorem prover too weak. 72 trivial. 12 not checked. [2022-07-12 11:14:34,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:14:35,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:14:35,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606271853] [2022-07-12 11:14:35,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:14:35,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71931829] [2022-07-12 11:14:35,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71931829] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:14:35,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:14:35,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-07-12 11:14:35,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319282879] [2022-07-12 11:14:35,173 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:14:35,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-12 11:14:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:14:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-12 11:14:35,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1058, Unknown=38, NotChecked=204, Total=1406 [2022-07-12 11:14:35,175 INFO L87 Difference]: Start difference. First operand 624 states and 767 transitions. Second operand has 34 states, 30 states have (on average 3.8) internal successors, (114), 32 states have internal predecessors, (114), 13 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (27), 12 states have call predecessors, (27), 13 states have call successors, (27) [2022-07-12 11:14:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:14:46,388 INFO L93 Difference]: Finished difference Result 936 states and 1174 transitions. [2022-07-12 11:14:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 11:14:46,389 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 3.8) internal successors, (114), 32 states have internal predecessors, (114), 13 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (27), 12 states have call predecessors, (27), 13 states have call successors, (27) Word has length 205 [2022-07-12 11:14:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:14:46,392 INFO L225 Difference]: With dead ends: 936 [2022-07-12 11:14:46,392 INFO L226 Difference]: Without dead ends: 721 [2022-07-12 11:14:46,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 250 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=183, Invalid=1920, Unknown=71, NotChecked=276, Total=2450 [2022-07-12 11:14:46,394 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 223 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1992 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:14:46,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1950 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1257 Invalid, 0 Unknown, 1992 Unchecked, 0.8s Time] [2022-07-12 11:14:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-07-12 11:14:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 641. [2022-07-12 11:14:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 486 states have (on average 1.1419753086419753) internal successors, (555), 495 states have internal predecessors, (555), 85 states have call successors, (85), 46 states have call predecessors, (85), 69 states have return successors, (153), 99 states have call predecessors, (153), 84 states have call successors, (153) [2022-07-12 11:14:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 793 transitions. [2022-07-12 11:14:46,419 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 793 transitions. Word has length 205 [2022-07-12 11:14:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:14:46,419 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 793 transitions. [2022-07-12 11:14:46,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 3.8) internal successors, (114), 32 states have internal predecessors, (114), 13 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (27), 12 states have call predecessors, (27), 13 states have call successors, (27) [2022-07-12 11:14:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 793 transitions. [2022-07-12 11:14:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-12 11:14:46,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:14:46,422 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:14:46,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 11:14:46,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:14:46,635 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:14:46,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:14:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1522627002, now seen corresponding path program 2 times [2022-07-12 11:14:46,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:14:46,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828581476] [2022-07-12 11:14:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:14:46,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:14:46,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:14:46,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700204715] [2022-07-12 11:14:46,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:14:46,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:14:46,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:14:46,685 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:14:46,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 11:14:47,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:14:47,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:14:47,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 130 conjunts are in the unsatisfiable core [2022-07-12 11:14:47,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:14:47,929 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 21 treesize of output 9 [2022-07-12 11:15:00,030 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 [2022-07-12 11:15:00,033 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 [2022-07-12 11:15:00,035 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 [2022-07-12 11:15:52,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:15:52,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:15:52,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2022-07-12 11:15:52,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:15:52,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:15:52,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2022-07-12 11:15:52,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:15:52,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:15:52,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2022-07-12 11:15:52,221 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-12 11:15:52,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2022-07-12 11:15:52,236 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-12 11:15:52,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2022-07-12 11:15:52,240 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-12 11:15:52,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2022-07-12 11:15:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 150 proven. 21 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-12 11:15:52,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:15:58,138 WARN L833 $PredicateComparison]: unable to prove that (and (or (forall ((|v_save_byte_from_array_~storage#1.base_32| Int) (v_ArrVal_3425 Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| Int) (v_ArrVal_3423 Int) (v_ArrVal_3424 Int) (v_ArrVal_3421 Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10| Int) (v_ArrVal_3422 Int) (v_ArrVal_3420 Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| 32)) (.cse1 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset| 80)) (.cse3 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| 8))) (or (not (let ((.cse0 (store |c_#memory_$Pointer$.offset| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_$Pointer$.offset| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3425) .cse3 v_ArrVal_3423)))) (= (select (select .cse0 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse1) (select (select .cse0 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) .cse2)))) (not (let ((.cse4 (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_int| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3421) .cse3 v_ArrVal_3422)))) (= (select (select .cse4 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) (+ |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| 8)) (select (select .cse4 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset|))))) (not (let ((.cse5 (store |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3420) .cse3 v_ArrVal_3424)))) (= (select (select .cse5 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) .cse2) (select (select .cse5 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse1))))))) (<= 0 |c_#StackHeapBarrier|)) (forall ((|v_save_byte_from_array_~storage#1.base_32| Int) (v_ArrVal_3425 Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| Int) (v_ArrVal_3423 Int) (v_ArrVal_3424 Int) (v_ArrVal_3421 Int) (v_ArrVal_3422 Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10| Int) (v_ArrVal_3420 Int)) (let ((.cse9 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| 8))) (let ((.cse11 (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_int| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3421) .cse9 v_ArrVal_3422)))) (let ((.cse10 (select (select .cse11 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) (+ |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| 8))) (.cse8 (+ |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| 32)) (.cse7 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset| 80))) (or (not (let ((.cse6 (store |c_#memory_$Pointer$.offset| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_$Pointer$.offset| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3425) .cse9 v_ArrVal_3423)))) (= (select (select .cse6 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse7) (select (select .cse6 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) .cse8)))) (not (= .cse10 (select (select .cse11 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset|)))) (< 0 (mod .cse10 18446744073709551616)) (not (let ((.cse12 (store |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3420) .cse9 v_ArrVal_3424)))) (= (select (select .cse12 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) .cse8) (select (select .cse12 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse7))))))))) (forall ((|v_save_byte_from_array_~storage#1.base_32| Int) (v_ArrVal_3425 Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| Int) (v_ArrVal_3423 Int) (v_ArrVal_3424 Int) (v_ArrVal_3421 Int) (v_ArrVal_3422 Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10| Int) (v_ArrVal_3420 Int)) (let ((.cse17 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| 8))) (let ((.cse19 (store |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3420) .cse17 v_ArrVal_3424))) (.cse13 (store |c_#memory_$Pointer$.offset| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_$Pointer$.offset| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3425) .cse17 v_ArrVal_3423))) (.cse20 (+ |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| 32))) (let ((.cse15 (select (select .cse13 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) .cse20)) (.cse14 (+ |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset| 80)) (.cse18 (select (select .cse19 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) .cse20))) (or (not (= (select (select .cse13 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse14) .cse15)) (not (= .cse15 0)) (not (let ((.cse16 (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_32| (store (store (select |c_#memory_int| |v_save_byte_from_array_~storage#1.base_32|) |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_byte_container~0#1.offset| v_ArrVal_3421) .cse17 v_ArrVal_3422)))) (= (select (select .cse16 |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_10|) (+ |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_10| 8)) (select (select .cse16 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset|))))) (not (= .cse18 (select (select .cse19 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) .cse14))) (not (= .cse18 0)))))))) is different from false [2022-07-12 11:15:58,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:58,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828581476] [2022-07-12 11:15:58,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:15:58,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700204715] [2022-07-12 11:15:58,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700204715] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:15:58,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:15:58,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-07-12 11:15:58,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626831360] [2022-07-12 11:15:58,144 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:15:58,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 11:15:58,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:58,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 11:15:58,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1126, Unknown=28, NotChecked=68, Total=1332 [2022-07-12 11:15:58,145 INFO L87 Difference]: Start difference. First operand 641 states and 793 transitions. Second operand has 30 states, 26 states have (on average 4.038461538461538) internal successors, (105), 28 states have internal predecessors, (105), 11 states have call successors, (27), 5 states have call predecessors, (27), 8 states have return successors, (26), 8 states have call predecessors, (26), 11 states have call successors, (26)