./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_byte_buf_eq_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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:30:12,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:30:12,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:30:12,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:30:12,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:30:12,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:30:12,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:30:12,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:30:12,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:30:12,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:30:12,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:30:12,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:30:12,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:30:12,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:30:12,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:30:12,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:30:12,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:30:12,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:30:12,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:30:12,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:30:12,710 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:30:12,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:30:12,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:30:12,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:30:12,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:30:12,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:30:12,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:30:12,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:30:12,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:30:12,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:30:12,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:30:12,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:30:12,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:30:12,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:30:12,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:30:12,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:30:12,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:30:12,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:30:12,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:30:12,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:30:12,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:30:12,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:30:12,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:30:12,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:30:12,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:30:12,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:30:12,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:30:12,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:30:12,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:30:12,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:30:12,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:30:12,777 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:30:12,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:30:12,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:30:12,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:30:12,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:30:12,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:30:12,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:30:12,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:30:12,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:30:12,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:30:12,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:30:12,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:30:12,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:30:12,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:30:12,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:30:12,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:30:12,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:30:12,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:30:12,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:30:12,782 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:30:12,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:30:12,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:30:12,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2022-07-21 09:30:13,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:30:13,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:30:13,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:30:13,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:30:13,145 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:30:13,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-07-21 09:30:13,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9849ad620/8eefb8428ff941bb88f6b632f61ac5b4/FLAGee8d3451f [2022-07-21 09:30:13,931 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:30:13,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-07-21 09:30:13,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9849ad620/8eefb8428ff941bb88f6b632f61ac5b4/FLAGee8d3451f [2022-07-21 09:30:14,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9849ad620/8eefb8428ff941bb88f6b632f61ac5b4 [2022-07-21 09:30:14,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:30:14,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:30:14,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:30:14,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:30:14,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:30:14,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:30:14" (1/1) ... [2022-07-21 09:30:14,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d5007d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:14, skipping insertion in model container [2022-07-21 09:30:14,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:30:14" (1/1) ... [2022-07-21 09:30:14,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:30:14,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:30:14,587 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_byte_buf_eq_harness.i[4489,4502] [2022-07-21 09:30:14,594 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_byte_buf_eq_harness.i[4549,4562] [2022-07-21 09:30:15,239 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,241 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,244 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,245 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,247 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,261 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,264 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,266 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,268 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,488 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:30:15,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:30:15,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:30:15,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:30:15,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:30:15,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:30:15,494 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:30:15,494 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:30:15,495 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:30:15,495 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:30:15,593 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:30:15,669 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,669 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:30:15,778 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:30:15,802 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_byte_buf_eq_harness.i[4489,4502] [2022-07-21 09:30:15,804 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_byte_buf_eq_harness.i[4549,4562] [2022-07-21 09:30:15,852 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,852 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,853 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,853 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,855 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,866 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,867 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,868 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,868 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:15,909 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:30:15,910 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:30:15,910 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:30:15,911 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:30:15,911 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:30:15,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:30:15,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:30:15,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:30:15,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:30:15,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:30:15,936 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:30:16,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:16,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:30:16,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:30:16,331 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:30:16,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16 WrapperNode [2022-07-21 09:30:16,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:30:16,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:30:16,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:30:16,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:30:16,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,537 INFO L137 Inliner]: procedures = 691, calls = 2666, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 887 [2022-07-21 09:30:16,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:30:16,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:30:16,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:30:16,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:30:16,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:30:16,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:30:16,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:30:16,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:30:16,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (1/1) ... [2022-07-21 09:30:16,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:30:16,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:16,628 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) [2022-07-21 09:30:16,661 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 [2022-07-21 09:30:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-21 09:30:16,682 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-21 09:30:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 09:30:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:30:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:30:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:30:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:30:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:30:16,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:30:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:30:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:30:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-21 09:30:16,685 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-21 09:30:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:30:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-21 09:30:16,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-21 09:30:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:30:16,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:30:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:30:16,687 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:30:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:30:16,687 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:30:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:30:16,687 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:30:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:30:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:30:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-07-21 09:30:16,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-07-21 09:30:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:30:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:30:16,689 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:30:16,690 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-21 09:30:16,690 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-21 09:30:16,690 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-07-21 09:30:16,690 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-07-21 09:30:16,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:30:16,690 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-07-21 09:30:16,690 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-07-21 09:30:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:30:16,968 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:30:16,970 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:30:18,004 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:30:18,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:30:18,014 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:30:18,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:30:18 BoogieIcfgContainer [2022-07-21 09:30:18,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:30:18,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:30:18,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:30:18,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:30:18,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:30:14" (1/3) ... [2022-07-21 09:30:18,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd297cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:30:18, skipping insertion in model container [2022-07-21 09:30:18,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:30:16" (2/3) ... [2022-07-21 09:30:18,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd297cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:30:18, skipping insertion in model container [2022-07-21 09:30:18,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:30:18" (3/3) ... [2022-07-21 09:30:18,024 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2022-07-21 09:30:18,036 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:30:18,036 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:30:18,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:30:18,098 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@36ddf1ac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@216bdc52 [2022-07-21 09:30:18,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:30:18,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-21 09:30:18,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 09:30:18,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:18,115 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 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] [2022-07-21 09:30:18,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1419889978, now seen corresponding path program 1 times [2022-07-21 09:30:18,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:18,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648001544] [2022-07-21 09:30:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:30:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:30:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:30:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:30:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:30:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-21 09:30:19,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:19,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648001544] [2022-07-21 09:30:19,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648001544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:19,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:30:19,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:30:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645055995] [2022-07-21 09:30:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:19,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:30:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:30:19,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:30:19,047 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) 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, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:30:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:19,503 INFO L93 Difference]: Finished difference Result 304 states and 439 transitions. [2022-07-21 09:30:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:30:19,505 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, (20), 5 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 113 [2022-07-21 09:30:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:19,513 INFO L225 Difference]: With dead ends: 304 [2022-07-21 09:30:19,513 INFO L226 Difference]: Without dead ends: 150 [2022-07-21 09:30:19,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:30:19,528 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 213 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:19,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 236 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:30:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-21 09:30:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2022-07-21 09:30:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-21 09:30:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2022-07-21 09:30:19,577 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 113 [2022-07-21 09:30:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:19,577 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2022-07-21 09:30:19,578 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, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:30:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2022-07-21 09:30:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 09:30:19,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:19,584 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 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] [2022-07-21 09:30:19,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:30:19,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash -254215752, now seen corresponding path program 1 times [2022-07-21 09:30:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:19,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450656506] [2022-07-21 09:30:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:19,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:30:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:30:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:30:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:30:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:30:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 09:30:20,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:20,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450656506] [2022-07-21 09:30:20,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450656506] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:20,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448222407] [2022-07-21 09:30:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:20,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:20,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:20,039 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) [2022-07-21 09:30:20,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:30:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:20,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:30:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 09:30:20,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:20,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448222407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:20,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:20,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-21 09:30:20,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946678356] [2022-07-21 09:30:20,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:20,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:30:20,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:20,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:30:20,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:30:20,741 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:30:21,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:21,047 INFO L93 Difference]: Finished difference Result 292 states and 395 transitions. [2022-07-21 09:30:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:30:21,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2022-07-21 09:30:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:21,049 INFO L225 Difference]: With dead ends: 292 [2022-07-21 09:30:21,050 INFO L226 Difference]: Without dead ends: 151 [2022-07-21 09:30:21,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:30:21,056 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 214 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:21,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 425 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:30:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-21 09:30:21,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-21 09:30:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2022-07-21 09:30:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2022-07-21 09:30:21,098 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 113 [2022-07-21 09:30:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:21,101 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2022-07-21 09:30:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:30:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2022-07-21 09:30:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 09:30:21,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:21,109 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 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] [2022-07-21 09:30:21,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 09:30:21,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:21,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1731779843, now seen corresponding path program 1 times [2022-07-21 09:30:21,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:21,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290531843] [2022-07-21 09:30:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:30:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:30:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:30:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:30:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 09:30:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 09:30:21,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:21,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290531843] [2022-07-21 09:30:21,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290531843] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:21,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835435702] [2022-07-21 09:30:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:21,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:21,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:21,840 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) [2022-07-21 09:30:21,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:30:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:30:22,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 09:30:22,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:22,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835435702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:22,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:22,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-21 09:30:22,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972817884] [2022-07-21 09:30:22,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:22,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:30:22,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:22,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:30:22,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:30:22,444 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 09:30:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:22,697 INFO L93 Difference]: Finished difference Result 247 states and 339 transitions. [2022-07-21 09:30:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:30:22,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 119 [2022-07-21 09:30:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:22,701 INFO L225 Difference]: With dead ends: 247 [2022-07-21 09:30:22,701 INFO L226 Difference]: Without dead ends: 151 [2022-07-21 09:30:22,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:30:22,702 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 229 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:22,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 553 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:30:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-21 09:30:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-21 09:30:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2022-07-21 09:30:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2022-07-21 09:30:22,718 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 119 [2022-07-21 09:30:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:22,718 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2022-07-21 09:30:22,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 09:30:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2022-07-21 09:30:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 09:30:22,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:22,720 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:30:22,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:22,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 09:30:22,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:22,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1773749607, now seen corresponding path program 2 times [2022-07-21 09:30:22,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:22,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243759251] [2022-07-21 09:30:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:22,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:30:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:30:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:30:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:30:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:30:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-21 09:30:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243759251] [2022-07-21 09:30:23,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243759251] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439491888] [2022-07-21 09:30:23,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:30:23,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:23,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:23,398 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) [2022-07-21 09:30:23,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:30:23,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 09:30:23,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:30:23,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 09:30:23,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-21 09:30:23,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:23,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439491888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:23,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:23,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-21 09:30:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37265649] [2022-07-21 09:30:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:23,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:30:23,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:30:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:30:23,930 INFO L87 Difference]: Start difference. First operand 151 states and 204 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:30:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:24,016 INFO L93 Difference]: Finished difference Result 163 states and 223 transitions. [2022-07-21 09:30:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:30:24,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 131 [2022-07-21 09:30:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:24,018 INFO L225 Difference]: With dead ends: 163 [2022-07-21 09:30:24,019 INFO L226 Difference]: Without dead ends: 161 [2022-07-21 09:30:24,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:30:24,020 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 22 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:24,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1345 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:30:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-21 09:30:24,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2022-07-21 09:30:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 99 states have internal predecessors, (115), 47 states have call successors, (47), 14 states have call predecessors, (47), 16 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2022-07-21 09:30:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2022-07-21 09:30:24,036 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 131 [2022-07-21 09:30:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:24,037 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2022-07-21 09:30:24,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:30:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2022-07-21 09:30:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 09:30:24,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:24,039 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:30:24,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:24,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:24,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:24,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:24,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1277784929, now seen corresponding path program 1 times [2022-07-21 09:30:24,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:24,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842476086] [2022-07-21 09:30:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:24,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:30:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:30:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:30:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:30:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:30:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-21 09:30:24,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:24,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842476086] [2022-07-21 09:30:24,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842476086] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:24,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105777941] [2022-07-21 09:30:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:24,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:24,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:24,661 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) [2022-07-21 09:30:24,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:30:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:25,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 2839 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:30:25,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-21 09:30:25,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:25,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105777941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:25,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:25,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-21 09:30:25,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899964935] [2022-07-21 09:30:25,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:25,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:30:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:25,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:30:25,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:30:25,244 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-07-21 09:30:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:25,520 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2022-07-21 09:30:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:30:25,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 135 [2022-07-21 09:30:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:25,523 INFO L225 Difference]: With dead ends: 280 [2022-07-21 09:30:25,525 INFO L226 Difference]: Without dead ends: 157 [2022-07-21 09:30:25,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:30:25,526 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 228 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:25,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 681 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:30:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-21 09:30:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-07-21 09:30:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 96 states have internal predecessors, (112), 47 states have call successors, (47), 14 states have call predecessors, (47), 15 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2022-07-21 09:30:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 213 transitions. [2022-07-21 09:30:25,551 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 213 transitions. Word has length 135 [2022-07-21 09:30:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:25,551 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 213 transitions. [2022-07-21 09:30:25,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-07-21 09:30:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 213 transitions. [2022-07-21 09:30:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 09:30:25,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:25,553 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-21 09:30:25,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 09:30:25,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:25,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:25,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:25,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1196248684, now seen corresponding path program 1 times [2022-07-21 09:30:25,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:25,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571893093] [2022-07-21 09:30:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:25,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:30:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:30:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:30:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:30:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:30:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-21 09:30:26,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:26,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571893093] [2022-07-21 09:30:26,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571893093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:26,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:30:26,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:30:26,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045881675] [2022-07-21 09:30:26,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:26,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:30:26,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:30:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:30:26,371 INFO L87 Difference]: Start difference. First operand 157 states and 213 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:30:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:27,100 INFO L93 Difference]: Finished difference Result 334 states and 471 transitions. [2022-07-21 09:30:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:30:27,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2022-07-21 09:30:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:27,104 INFO L225 Difference]: With dead ends: 334 [2022-07-21 09:30:27,104 INFO L226 Difference]: Without dead ends: 184 [2022-07-21 09:30:27,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:30:27,106 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 139 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:27,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 443 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:30:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-21 09:30:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 162. [2022-07-21 09:30:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 99 states have (on average 1.202020202020202) internal successors, (119), 101 states have internal predecessors, (119), 47 states have call successors, (47), 14 states have call predecessors, (47), 15 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2022-07-21 09:30:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2022-07-21 09:30:27,134 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 141 [2022-07-21 09:30:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:27,135 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2022-07-21 09:30:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:30:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2022-07-21 09:30:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 09:30:27,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:27,139 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-21 09:30:27,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:30:27,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:27,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1454414122, now seen corresponding path program 1 times [2022-07-21 09:30:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:27,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138065894] [2022-07-21 09:30:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:27,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:30:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:27,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:30:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:30:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:30:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:30:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-21 09:30:28,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:28,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138065894] [2022-07-21 09:30:28,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138065894] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:28,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988191654] [2022-07-21 09:30:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:28,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:28,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:28,239 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) [2022-07-21 09:30:28,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:30:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:28,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-21 09:30:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:28,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:30:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 09:30:29,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:29,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988191654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:29,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:29,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 30 [2022-07-21 09:30:29,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917277504] [2022-07-21 09:30:29,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:29,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:30:29,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:29,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:30:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2022-07-21 09:30:29,273 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-21 09:30:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:29,413 INFO L93 Difference]: Finished difference Result 340 states and 457 transitions. [2022-07-21 09:30:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:30:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 141 [2022-07-21 09:30:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:29,415 INFO L225 Difference]: With dead ends: 340 [2022-07-21 09:30:29,415 INFO L226 Difference]: Without dead ends: 181 [2022-07-21 09:30:29,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-07-21 09:30:29,417 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 28 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:29,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1280 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-07-21 09:30:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-21 09:30:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-07-21 09:30:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 119 states have internal predecessors, (142), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2022-07-21 09:30:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 243 transitions. [2022-07-21 09:30:29,430 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 243 transitions. Word has length 141 [2022-07-21 09:30:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:29,431 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 243 transitions. [2022-07-21 09:30:29,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-21 09:30:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 243 transitions. [2022-07-21 09:30:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 09:30:29,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:29,433 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-21 09:30:29,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:29,647 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 [2022-07-21 09:30:29,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -578979924, now seen corresponding path program 1 times [2022-07-21 09:30:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:29,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295852942] [2022-07-21 09:30:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:29,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:30:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:30:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:30:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:30:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:30:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-21 09:30:29,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:29,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295852942] [2022-07-21 09:30:29,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295852942] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:29,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531005360] [2022-07-21 09:30:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:29,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:29,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:29,934 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) [2022-07-21 09:30:29,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:30:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:30,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:30:30,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-21 09:30:30,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:30,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531005360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:30,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:30,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-21 09:30:30,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610671505] [2022-07-21 09:30:30,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:30,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:30:30,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:30,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:30:30,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:30:30,470 INFO L87 Difference]: Start difference. First operand 181 states and 243 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:30:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:30,498 INFO L93 Difference]: Finished difference Result 349 states and 476 transitions. [2022-07-21 09:30:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:30:30,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2022-07-21 09:30:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:30,500 INFO L225 Difference]: With dead ends: 349 [2022-07-21 09:30:30,500 INFO L226 Difference]: Without dead ends: 190 [2022-07-21 09:30:30,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:30:30,502 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 583 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 [2022-07-21 09:30:30,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 583 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:30:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-21 09:30:30,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2022-07-21 09:30:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.209090909090909) internal successors, (133), 111 states have internal predecessors, (133), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (53), 46 states have call predecessors, (53), 46 states have call successors, (53) [2022-07-21 09:30:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 233 transitions. [2022-07-21 09:30:30,514 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 233 transitions. Word has length 141 [2022-07-21 09:30:30,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:30,514 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 233 transitions. [2022-07-21 09:30:30,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 09:30:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 233 transitions. [2022-07-21 09:30:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 09:30:30,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:30,516 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 09:30:30,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:30,739 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 [2022-07-21 09:30:30,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2073865936, now seen corresponding path program 2 times [2022-07-21 09:30:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:30,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673473186] [2022-07-21 09:30:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:30,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:30:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:30:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:30:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:30:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:30:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:30:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:30:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:30:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 09:30:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 09:30:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-21 09:30:31,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:31,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673473186] [2022-07-21 09:30:31,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673473186] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:31,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898457772] [2022-07-21 09:30:31,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:30:31,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:31,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:31,187 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) [2022-07-21 09:30:31,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:30:32,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:30:32,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:30:32,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-21 09:30:32,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:32,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:32,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:32,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:32,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:32,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:32,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:32,589 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-21 09:30:32,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2022-07-21 09:30:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 82 proven. 20 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-21 09:30:33,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:30:33,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898457772] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:33,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:30:33,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2022-07-21 09:30:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662244823] [2022-07-21 09:30:33,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:30:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 09:30:33,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:33,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 09:30:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 09:30:33,964 INFO L87 Difference]: Start difference. First operand 173 states and 233 transitions. Second operand has 27 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 10 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) [2022-07-21 09:30:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:37,873 INFO L93 Difference]: Finished difference Result 510 states and 781 transitions. [2022-07-21 09:30:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-21 09:30:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 10 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) Word has length 145 [2022-07-21 09:30:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:37,877 INFO L225 Difference]: With dead ends: 510 [2022-07-21 09:30:37,877 INFO L226 Difference]: Without dead ends: 348 [2022-07-21 09:30:37,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 179 SyntacticMatches, 12 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=559, Invalid=3994, Unknown=3, NotChecked=0, Total=4556 [2022-07-21 09:30:37,880 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 535 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 5397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1459 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:37,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2201 Invalid, 5397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 3610 Invalid, 0 Unknown, 1459 Unchecked, 2.5s Time] [2022-07-21 09:30:37,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-07-21 09:30:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 238. [2022-07-21 09:30:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 157 states have (on average 1.197452229299363) internal successors, (188), 160 states have internal predecessors, (188), 58 states have call successors, (58), 20 states have call predecessors, (58), 22 states have return successors, (89), 57 states have call predecessors, (89), 57 states have call successors, (89) [2022-07-21 09:30:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 335 transitions. [2022-07-21 09:30:37,903 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 335 transitions. Word has length 145 [2022-07-21 09:30:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:37,904 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 335 transitions. [2022-07-21 09:30:37,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 10 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) [2022-07-21 09:30:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 335 transitions. [2022-07-21 09:30:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 09:30:37,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:37,906 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-21 09:30:37,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:38,119 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 [2022-07-21 09:30:38,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash -854856777, now seen corresponding path program 1 times [2022-07-21 09:30:38,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:38,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495314725] [2022-07-21 09:30:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:38,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:30:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:30:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:30:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 09:30:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 09:30:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-21 09:30:38,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495314725] [2022-07-21 09:30:38,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495314725] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364946549] [2022-07-21 09:30:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:38,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:38,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:38,447 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) [2022-07-21 09:30:38,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:30:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:38,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:30:38,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 09:30:38,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:38,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364946549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:38,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:38,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-21 09:30:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830701135] [2022-07-21 09:30:38,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:30:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:30:38,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:30:38,988 INFO L87 Difference]: Start difference. First operand 238 states and 335 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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) [2022-07-21 09:30:39,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:39,014 INFO L93 Difference]: Finished difference Result 412 states and 586 transitions. [2022-07-21 09:30:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:30:39,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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 147 [2022-07-21 09:30:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:39,016 INFO L225 Difference]: With dead ends: 412 [2022-07-21 09:30:39,017 INFO L226 Difference]: Without dead ends: 186 [2022-07-21 09:30:39,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:30:39,018 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 9 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:39,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 576 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:30:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-21 09:30:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2022-07-21 09:30:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 116 states have internal predecessors, (135), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (60), 46 states have call predecessors, (60), 46 states have call successors, (60) [2022-07-21 09:30:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 242 transitions. [2022-07-21 09:30:39,031 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 242 transitions. Word has length 147 [2022-07-21 09:30:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:39,031 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 242 transitions. [2022-07-21 09:30:39,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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) [2022-07-21 09:30:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 242 transitions. [2022-07-21 09:30:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 09:30:39,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:39,033 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-21 09:30:39,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:39,259 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 [2022-07-21 09:30:39,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash -840353543, now seen corresponding path program 1 times [2022-07-21 09:30:39,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:39,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932934540] [2022-07-21 09:30:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:39,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:30:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:30:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:30:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 09:30:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 09:30:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-21 09:30:39,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:39,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932934540] [2022-07-21 09:30:39,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932934540] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:39,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352516661] [2022-07-21 09:30:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:39,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:39,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:39,512 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) [2022-07-21 09:30:39,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:30:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:39,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:30:40,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-21 09:30:40,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:40,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352516661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:40,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:40,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-21 09:30:40,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981615143] [2022-07-21 09:30:40,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:40,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:30:40,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:30:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:30:40,015 INFO L87 Difference]: Start difference. First operand 178 states and 242 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-07-21 09:30:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:40,044 INFO L93 Difference]: Finished difference Result 353 states and 497 transitions. [2022-07-21 09:30:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:30:40,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 147 [2022-07-21 09:30:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:40,046 INFO L225 Difference]: With dead ends: 353 [2022-07-21 09:30:40,046 INFO L226 Difference]: Without dead ends: 187 [2022-07-21 09:30:40,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:30:40,048 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 34 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 574 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 [2022-07-21 09:30:40,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 574 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:30:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-21 09:30:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 174. [2022-07-21 09:30:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 112 states have internal predecessors, (128), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (60), 46 states have call predecessors, (60), 46 states have call successors, (60) [2022-07-21 09:30:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 235 transitions. [2022-07-21 09:30:40,062 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 235 transitions. Word has length 147 [2022-07-21 09:30:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:40,062 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 235 transitions. [2022-07-21 09:30:40,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-07-21 09:30:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 235 transitions. [2022-07-21 09:30:40,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 09:30:40,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:40,064 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-21 09:30:40,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:40,279 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 [2022-07-21 09:30:40,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:40,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1878938117, now seen corresponding path program 1 times [2022-07-21 09:30:40,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:40,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65314229] [2022-07-21 09:30:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:30:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:40,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:30:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 09:30:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 09:30:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 09:30:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-21 09:30:41,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:41,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65314229] [2022-07-21 09:30:41,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65314229] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:41,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904204963] [2022-07-21 09:30:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:41,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:41,254 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) [2022-07-21 09:30:41,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:30:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:41,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 2860 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-21 09:30:41,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:41,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:30:42,239 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 40 treesize of output 28 [2022-07-21 09:30:42,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:42,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:42,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:30:42,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-07-21 09:30:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 09:30:42,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:42,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904204963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:42,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:42,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [21] total 36 [2022-07-21 09:30:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563615853] [2022-07-21 09:30:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:42,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 09:30:42,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 09:30:42,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 09:30:42,813 INFO L87 Difference]: Start difference. First operand 174 states and 235 transitions. Second operand has 17 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-21 09:30:43,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:43,643 INFO L93 Difference]: Finished difference Result 384 states and 531 transitions. [2022-07-21 09:30:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:30:43,643 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 147 [2022-07-21 09:30:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:43,645 INFO L225 Difference]: With dead ends: 384 [2022-07-21 09:30:43,645 INFO L226 Difference]: Without dead ends: 271 [2022-07-21 09:30:43,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 165 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=158, Invalid=1912, Unknown=0, NotChecked=0, Total=2070 [2022-07-21 09:30:43,646 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 119 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 417 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:43,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 789 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 734 Invalid, 0 Unknown, 417 Unchecked, 0.6s Time] [2022-07-21 09:30:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-21 09:30:43,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 227. [2022-07-21 09:30:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 152 states have (on average 1.1578947368421053) internal successors, (176), 158 states have internal predecessors, (176), 52 states have call successors, (52), 18 states have call predecessors, (52), 22 states have return successors, (75), 50 states have call predecessors, (75), 51 states have call successors, (75) [2022-07-21 09:30:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 303 transitions. [2022-07-21 09:30:43,663 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 303 transitions. Word has length 147 [2022-07-21 09:30:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:43,664 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 303 transitions. [2022-07-21 09:30:43,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-21 09:30:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 303 transitions. [2022-07-21 09:30:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 09:30:43,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:43,666 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-21 09:30:43,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:43,884 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 [2022-07-21 09:30:43,884 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:43,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2059339103, now seen corresponding path program 1 times [2022-07-21 09:30:43,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:43,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695720982] [2022-07-21 09:30:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:30:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:30:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 09:30:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:30:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 09:30:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:30:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 09:30:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-21 09:30:44,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:44,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695720982] [2022-07-21 09:30:44,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695720982] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:44,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606486091] [2022-07-21 09:30:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:44,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:44,576 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) [2022-07-21 09:30:44,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:30:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:45,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-21 09:30:45,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:45,510 INFO L356 Elim1Store]: treesize reduction 288, result has 17.5 percent of original size [2022-07-21 09:30:45,510 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 4 case distinctions, treesize of input 50 treesize of output 81 [2022-07-21 09:30:45,631 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-21 09:30:45,632 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 54 treesize of output 34 [2022-07-21 09:30:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 112 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-21 09:30:45,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:30:46,101 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 30 treesize of output 18 [2022-07-21 09:30:46,218 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-21 09:30:46,218 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 30 treesize of output 25 [2022-07-21 09:30:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-21 09:30:46,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606486091] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:30:46,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:30:46,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 29 [2022-07-21 09:30:46,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834137141] [2022-07-21 09:30:46,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:30:46,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-21 09:30:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:46,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-21 09:30:46,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2022-07-21 09:30:46,268 INFO L87 Difference]: Start difference. First operand 227 states and 303 transitions. Second operand has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) [2022-07-21 09:30:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:49,474 INFO L93 Difference]: Finished difference Result 530 states and 799 transitions. [2022-07-21 09:30:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 09:30:49,475 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) Word has length 154 [2022-07-21 09:30:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:49,479 INFO L225 Difference]: With dead ends: 530 [2022-07-21 09:30:49,479 INFO L226 Difference]: Without dead ends: 412 [2022-07-21 09:30:49,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 333 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2022-07-21 09:30:49,485 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 247 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 4443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 963 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:49,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1191 Invalid, 4443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 3270 Invalid, 0 Unknown, 963 Unchecked, 2.5s Time] [2022-07-21 09:30:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-07-21 09:30:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 302. [2022-07-21 09:30:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 202 states have (on average 1.1435643564356435) internal successors, (231), 210 states have internal predecessors, (231), 72 states have call successors, (72), 21 states have call predecessors, (72), 27 states have return successors, (117), 70 states have call predecessors, (117), 71 states have call successors, (117) [2022-07-21 09:30:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 420 transitions. [2022-07-21 09:30:49,518 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 420 transitions. Word has length 154 [2022-07-21 09:30:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:49,518 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 420 transitions. [2022-07-21 09:30:49,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) [2022-07-21 09:30:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 420 transitions. [2022-07-21 09:30:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 09:30:49,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:49,522 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 09:30:49,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:49,747 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 [2022-07-21 09:30:49,747 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:49,748 INFO L85 PathProgramCache]: Analyzing trace with hash 856849283, now seen corresponding path program 2 times [2022-07-21 09:30:49,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:49,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864618539] [2022-07-21 09:30:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:49,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:30:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:30:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:30:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 09:30:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:30:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 09:30:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-21 09:30:50,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:50,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864618539] [2022-07-21 09:30:50,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864618539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:50,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:30:50,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:30:50,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522650532] [2022-07-21 09:30:50,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:50,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:30:50,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:30:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:30:50,662 INFO L87 Difference]: Start difference. First operand 302 states and 420 transitions. Second operand has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-21 09:30:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:52,497 INFO L93 Difference]: Finished difference Result 483 states and 696 transitions. [2022-07-21 09:30:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:30:52,497 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) Word has length 151 [2022-07-21 09:30:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:52,500 INFO L225 Difference]: With dead ends: 483 [2022-07-21 09:30:52,500 INFO L226 Difference]: Without dead ends: 354 [2022-07-21 09:30:52,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-07-21 09:30:52,502 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 308 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:52,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 750 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 09:30:52,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-07-21 09:30:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 313. [2022-07-21 09:30:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 206 states have (on average 1.1407766990291262) internal successors, (235), 215 states have internal predecessors, (235), 78 states have call successors, (78), 21 states have call predecessors, (78), 28 states have return successors, (130), 76 states have call predecessors, (130), 77 states have call successors, (130) [2022-07-21 09:30:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 443 transitions. [2022-07-21 09:30:52,540 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 443 transitions. Word has length 151 [2022-07-21 09:30:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:52,541 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 443 transitions. [2022-07-21 09:30:52,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-21 09:30:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 443 transitions. [2022-07-21 09:30:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-21 09:30:52,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:52,543 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 09:30:52,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 09:30:52,544 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:52,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash 541155687, now seen corresponding path program 1 times [2022-07-21 09:30:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:52,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181606021] [2022-07-21 09:30:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:30:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:30:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:30:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 09:30:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:30:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 09:30:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:30:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 09:30:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-21 09:30:53,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:53,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181606021] [2022-07-21 09:30:53,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181606021] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:53,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764589442] [2022-07-21 09:30:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:53,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:53,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:53,038 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) [2022-07-21 09:30:53,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:30:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:53,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 71 conjunts are in the unsatisfiable core [2022-07-21 09:30:53,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:53,633 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 8 [2022-07-21 09:30:53,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:30:54,417 INFO L356 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2022-07-21 09:30:54,417 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 3 case distinctions, treesize of input 41 treesize of output 48 [2022-07-21 09:30:54,428 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 17 treesize of output 19 [2022-07-21 09:30:54,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-21 09:30:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 09:30:54,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:30:54,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764589442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:30:54,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:54,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 30 [2022-07-21 09:30:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770710250] [2022-07-21 09:30:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:30:54,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 09:30:54,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 09:30:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2022-07-21 09:30:54,680 INFO L87 Difference]: Start difference. First operand 313 states and 443 transitions. Second operand has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-21 09:30:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:30:55,881 INFO L93 Difference]: Finished difference Result 695 states and 993 transitions. [2022-07-21 09:30:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 09:30:55,882 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 158 [2022-07-21 09:30:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:30:55,885 INFO L225 Difference]: With dead ends: 695 [2022-07-21 09:30:55,885 INFO L226 Difference]: Without dead ends: 450 [2022-07-21 09:30:55,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 175 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2022-07-21 09:30:55,888 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 246 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 755 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:30:55,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 703 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1220 Invalid, 0 Unknown, 755 Unchecked, 0.9s Time] [2022-07-21 09:30:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-21 09:30:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 438. [2022-07-21 09:30:55,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 279 states have (on average 1.1433691756272402) internal successors, (319), 290 states have internal predecessors, (319), 119 states have call successors, (119), 30 states have call predecessors, (119), 39 states have return successors, (194), 117 states have call predecessors, (194), 117 states have call successors, (194) [2022-07-21 09:30:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 632 transitions. [2022-07-21 09:30:55,940 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 632 transitions. Word has length 158 [2022-07-21 09:30:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:30:55,941 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 632 transitions. [2022-07-21 09:30:55,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-21 09:30:55,942 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 632 transitions. [2022-07-21 09:30:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-21 09:30:55,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:30:55,944 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 09:30:55,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:30:56,171 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,SelfDestructingSolverStorable14 [2022-07-21 09:30:56,171 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:30:56,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:30:56,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2039096891, now seen corresponding path program 2 times [2022-07-21 09:30:56,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:30:56,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381338127] [2022-07-21 09:30:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:30:56,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:30:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:30:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:30:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:30:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:30:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:30:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:30:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:30:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:30:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:30:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:30:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 09:30:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:30:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 09:30:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:30:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:30:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:30:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 09:30:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:30:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-21 09:30:57,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:57,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381338127] [2022-07-21 09:30:57,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381338127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:57,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446154086] [2022-07-21 09:30:57,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:30:57,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:30:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:30:57,445 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) [2022-07-21 09:30:57,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:30:58,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:30:58,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:30:58,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 09:30:58,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:30:58,691 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 8 [2022-07-21 09:30:59,206 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 26 treesize of output 26 [2022-07-21 09:30:59,257 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 27 treesize of output 15 [2022-07-21 09:30:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 120 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 09:30:59,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:30:59,605 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2270 (Array Int Int))) (<= 0 (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#rhs~0#1.base| v_ArrVal_2270) |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#lhs~0#1.offset|))) (+ (* 18446744073709551616 (div (* (- 1) .cse0) 18446744073709551616)) .cse0)))) is different from false [2022-07-21 09:30:59,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446154086] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:59,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:30:59,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 12] total 37 [2022-07-21 09:30:59,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806911281] [2022-07-21 09:30:59,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:30:59,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-21 09:30:59,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-21 09:30:59,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1384, Unknown=1, NotChecked=74, Total=1560 [2022-07-21 09:30:59,615 INFO L87 Difference]: Start difference. First operand 438 states and 632 transitions. Second operand has 37 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 15 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) [2022-07-21 09:31:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:08,824 INFO L93 Difference]: Finished difference Result 1196 states and 1950 transitions. [2022-07-21 09:31:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-21 09:31:08,825 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 15 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) Word has length 158 [2022-07-21 09:31:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:08,832 INFO L225 Difference]: With dead ends: 1196 [2022-07-21 09:31:08,833 INFO L226 Difference]: Without dead ends: 925 [2022-07-21 09:31:08,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 280 SyntacticMatches, 6 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=730, Invalid=6754, Unknown=2, NotChecked=170, Total=7656 [2022-07-21 09:31:08,837 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 692 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 9029 mSolverCounterSat, 1162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 10671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1162 IncrementalHoareTripleChecker+Valid, 9029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 480 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:08,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1498 Invalid, 10671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1162 Valid, 9029 Invalid, 0 Unknown, 480 Unchecked, 7.0s Time] [2022-07-21 09:31:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-07-21 09:31:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 630. [2022-07-21 09:31:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 384 states have (on average 1.1458333333333333) internal successors, (440), 393 states have internal predecessors, (440), 205 states have call successors, (205), 33 states have call predecessors, (205), 40 states have return successors, (314), 203 states have call predecessors, (314), 203 states have call successors, (314) [2022-07-21 09:31:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 959 transitions. [2022-07-21 09:31:08,942 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 959 transitions. Word has length 158 [2022-07-21 09:31:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:08,943 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 959 transitions. [2022-07-21 09:31:08,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 15 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) [2022-07-21 09:31:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 959 transitions. [2022-07-21 09:31:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 09:31:08,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:08,946 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 09:31:08,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:09,154 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,SelfDestructingSolverStorable15 [2022-07-21 09:31:09,154 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:09,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash -346258867, now seen corresponding path program 1 times [2022-07-21 09:31:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:09,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154998485] [2022-07-21 09:31:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:31:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:31:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:31:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:31:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:31:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:31:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:31:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:31:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 09:31:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:31:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 09:31:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-21 09:31:09,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:09,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154998485] [2022-07-21 09:31:09,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154998485] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475437141] [2022-07-21 09:31:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:09,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:09,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:09,520 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) [2022-07-21 09:31:09,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:31:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:10,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-21 09:31:10,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:10,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:31:10,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:31:10,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:31:10,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:31:10,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:31:10,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:31:10,339 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-21 09:31:10,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2022-07-21 09:31:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 122 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 09:31:10,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:31:11,587 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-21 09:31:11,588 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 20 treesize of output 19 [2022-07-21 09:31:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 52 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-21 09:31:11,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475437141] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:31:11,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:31:11,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 14] total 36 [2022-07-21 09:31:11,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679019451] [2022-07-21 09:31:11,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:31:11,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-21 09:31:11,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:11,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-21 09:31:11,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1153, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 09:31:11,639 INFO L87 Difference]: Start difference. First operand 630 states and 959 transitions. Second operand has 36 states, 34 states have (on average 5.029411764705882) internal successors, (171), 32 states have internal predecessors, (171), 11 states have call successors, (46), 8 states have call predecessors, (46), 10 states have return successors, (44), 10 states have call predecessors, (44), 11 states have call successors, (44) [2022-07-21 09:31:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:17,121 INFO L93 Difference]: Finished difference Result 1586 states and 2783 transitions. [2022-07-21 09:31:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-21 09:31:17,122 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 5.029411764705882) internal successors, (171), 32 states have internal predecessors, (171), 11 states have call successors, (46), 8 states have call predecessors, (46), 10 states have return successors, (44), 10 states have call predecessors, (44), 11 states have call successors, (44) Word has length 152 [2022-07-21 09:31:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:17,131 INFO L225 Difference]: With dead ends: 1586 [2022-07-21 09:31:17,131 INFO L226 Difference]: Without dead ends: 1136 [2022-07-21 09:31:17,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 316 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=513, Invalid=6293, Unknown=0, NotChecked=0, Total=6806 [2022-07-21 09:31:17,138 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 246 mSDsluCounter, 5624 mSDsCounter, 0 mSdLazyCounter, 6047 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 6034 SdHoareTripleChecker+Invalid, 7498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 6047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1253 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:17,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 6034 Invalid, 7498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 6047 Invalid, 0 Unknown, 1253 Unchecked, 4.1s Time] [2022-07-21 09:31:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-07-21 09:31:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 774. [2022-07-21 09:31:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 471 states have (on average 1.127388535031847) internal successors, (531), 485 states have internal predecessors, (531), 254 states have call successors, (254), 36 states have call predecessors, (254), 48 states have return successors, (523), 252 states have call predecessors, (523), 252 states have call successors, (523) [2022-07-21 09:31:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1308 transitions. [2022-07-21 09:31:17,273 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1308 transitions. Word has length 152 [2022-07-21 09:31:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:17,273 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1308 transitions. [2022-07-21 09:31:17,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 5.029411764705882) internal successors, (171), 32 states have internal predecessors, (171), 11 states have call successors, (46), 8 states have call predecessors, (46), 10 states have return successors, (44), 10 states have call predecessors, (44), 11 states have call successors, (44) [2022-07-21 09:31:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1308 transitions. [2022-07-21 09:31:17,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-21 09:31:17,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:17,278 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 09:31:17,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:17,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:17,491 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:17,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash -552254461, now seen corresponding path program 2 times [2022-07-21 09:31:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:17,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806458987] [2022-07-21 09:31:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:17,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:31:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:31:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:31:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:31:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:31:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:31:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 09:31:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 09:31:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 09:31:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:31:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 09:31:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-21 09:31:17,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:17,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806458987] [2022-07-21 09:31:17,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806458987] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:17,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978148585] [2022-07-21 09:31:17,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:31:17,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:17,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:17,968 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) [2022-07-21 09:31:17,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:31:19,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:31:19,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:31:19,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-21 09:31:19,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 120 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 09:31:19,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:31:20,179 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-21 09:31:20,180 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 20 treesize of output 19 [2022-07-21 09:31:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 38 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-21 09:31:20,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978148585] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:31:20,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:31:20,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 11] total 32 [2022-07-21 09:31:20,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821520966] [2022-07-21 09:31:20,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:31:20,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-21 09:31:20,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:20,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-21 09:31:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-07-21 09:31:20,228 INFO L87 Difference]: Start difference. First operand 774 states and 1308 transitions. Second operand has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-21 09:31:23,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:23,463 INFO L93 Difference]: Finished difference Result 1576 states and 2775 transitions. [2022-07-21 09:31:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 09:31:23,463 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) Word has length 158 [2022-07-21 09:31:23,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:23,471 INFO L225 Difference]: With dead ends: 1576 [2022-07-21 09:31:23,471 INFO L226 Difference]: Without dead ends: 904 [2022-07-21 09:31:23,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 327 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=486, Invalid=3290, Unknown=6, NotChecked=0, Total=3782 [2022-07-21 09:31:23,479 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 277 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 3777 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 3777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:23,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1360 Invalid, 4289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 3777 Invalid, 0 Unknown, 285 Unchecked, 2.1s Time] [2022-07-21 09:31:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-07-21 09:31:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 726. [2022-07-21 09:31:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 436 states have (on average 1.1261467889908257) internal successors, (491), 447 states have internal predecessors, (491), 244 states have call successors, (244), 36 states have call predecessors, (244), 45 states have return successors, (470), 242 states have call predecessors, (470), 242 states have call successors, (470) [2022-07-21 09:31:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1205 transitions. [2022-07-21 09:31:23,602 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1205 transitions. Word has length 158 [2022-07-21 09:31:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:23,602 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1205 transitions. [2022-07-21 09:31:23,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-21 09:31:23,603 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1205 transitions. [2022-07-21 09:31:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 09:31:23,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:23,606 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-21 09:31:23,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:23,819 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,SelfDestructingSolverStorable17 [2022-07-21 09:31:23,819 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash 628741198, now seen corresponding path program 3 times [2022-07-21 09:31:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:23,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310060057] [2022-07-21 09:31:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:31:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:31:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:31:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:31:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:31:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:31:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:31:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 09:31:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:31:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:31:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 09:31:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-21 09:31:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:25,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310060057] [2022-07-21 09:31:25,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310060057] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:25,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192700914] [2022-07-21 09:31:25,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:31:25,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:25,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:25,184 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) [2022-07-21 09:31:25,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:31:26,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-21 09:31:26,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:31:26,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-21 09:31:26,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 09:31:29,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:31:29,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192700914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:31:29,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:31:29,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [30] total 42 [2022-07-21 09:31:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554568936] [2022-07-21 09:31:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:31:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 09:31:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 09:31:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1597, Unknown=1, NotChecked=0, Total=1722 [2022-07-21 09:31:29,521 INFO L87 Difference]: Start difference. First operand 726 states and 1205 transitions. Second operand has 17 states, 16 states have (on average 5.0625) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-21 09:31:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:30,298 INFO L93 Difference]: Finished difference Result 1147 states and 1873 transitions. [2022-07-21 09:31:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 09:31:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 160 [2022-07-21 09:31:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:30,305 INFO L225 Difference]: With dead ends: 1147 [2022-07-21 09:31:30,305 INFO L226 Difference]: Without dead ends: 876 [2022-07-21 09:31:30,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=206, Invalid=2243, Unknown=1, NotChecked=0, Total=2450 [2022-07-21 09:31:30,308 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 99 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 525 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:30,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2142 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 315 Invalid, 0 Unknown, 525 Unchecked, 0.3s Time] [2022-07-21 09:31:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-07-21 09:31:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 759. [2022-07-21 09:31:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 457 states have (on average 1.12691466083151) internal successors, (515), 467 states have internal predecessors, (515), 252 states have call successors, (252), 41 states have call predecessors, (252), 49 states have return successors, (490), 250 states have call predecessors, (490), 250 states have call successors, (490) [2022-07-21 09:31:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1257 transitions. [2022-07-21 09:31:30,434 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1257 transitions. Word has length 160 [2022-07-21 09:31:30,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:30,435 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1257 transitions. [2022-07-21 09:31:30,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-21 09:31:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1257 transitions. [2022-07-21 09:31:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 09:31:30,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:30,439 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 09:31:30,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:30,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:30,658 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:30,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:30,658 INFO L85 PathProgramCache]: Analyzing trace with hash -651122480, now seen corresponding path program 4 times [2022-07-21 09:31:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:30,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652060474] [2022-07-21 09:31:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:30,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:31:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:31:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:31:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:31:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:31:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:31:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:31:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:31:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 09:31:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:31:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:31:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 09:31:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-21 09:31:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:31,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652060474] [2022-07-21 09:31:31,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652060474] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:31,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697973648] [2022-07-21 09:31:31,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 09:31:31,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:31,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:31,796 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) [2022-07-21 09:31:31,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:31:32,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 09:31:32,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:31:32,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2919 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-21 09:31:32,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 120 proven. 22 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 09:31:43,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:31:43,727 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-21 09:31:43,728 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 24 treesize of output 19 [2022-07-21 09:31:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 40 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-21 09:31:43,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697973648] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:31:43,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:31:43,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 9] total 37 [2022-07-21 09:31:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395928466] [2022-07-21 09:31:43,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:31:43,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-21 09:31:43,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:31:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-21 09:31:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1226, Unknown=1, NotChecked=0, Total=1332 [2022-07-21 09:31:43,774 INFO L87 Difference]: Start difference. First operand 759 states and 1257 transitions. Second operand has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 33 states have internal predecessors, (172), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) [2022-07-21 09:31:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:31:55,853 INFO L93 Difference]: Finished difference Result 1612 states and 2723 transitions. [2022-07-21 09:31:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-21 09:31:55,854 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 33 states have internal predecessors, (172), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) Word has length 160 [2022-07-21 09:31:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:31:55,861 INFO L225 Difference]: With dead ends: 1612 [2022-07-21 09:31:55,861 INFO L226 Difference]: Without dead ends: 1127 [2022-07-21 09:31:55,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 343 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=463, Invalid=4089, Unknown=4, NotChecked=0, Total=4556 [2022-07-21 09:31:55,866 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 439 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 5971 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 7242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 5971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 821 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:31:55,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1860 Invalid, 7242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 5971 Invalid, 0 Unknown, 821 Unchecked, 4.6s Time] [2022-07-21 09:31:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-07-21 09:31:55,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 857. [2022-07-21 09:31:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 538 states have (on average 1.1115241635687731) internal successors, (598), 545 states have internal predecessors, (598), 252 states have call successors, (252), 61 states have call predecessors, (252), 66 states have return successors, (457), 250 states have call predecessors, (457), 250 states have call successors, (457) [2022-07-21 09:31:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1307 transitions. [2022-07-21 09:31:56,001 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1307 transitions. Word has length 160 [2022-07-21 09:31:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:31:56,001 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1307 transitions. [2022-07-21 09:31:56,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 33 states have internal predecessors, (172), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) [2022-07-21 09:31:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1307 transitions. [2022-07-21 09:31:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 09:31:56,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:31:56,005 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-21 09:31:56,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 09:31:56,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:56,223 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:31:56,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:31:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1057371548, now seen corresponding path program 2 times [2022-07-21 09:31:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:31:56,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499435707] [2022-07-21 09:31:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:31:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:31:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:31:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:31:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:31:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:31:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:31:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:31:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:31:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:31:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:31:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:31:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:31:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:57,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 09:31:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:57,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 09:31:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:31:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:57,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:31:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 09:31:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:31:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-21 09:31:57,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:31:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499435707] [2022-07-21 09:31:57,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499435707] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:31:57,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872365268] [2022-07-21 09:31:57,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:31:57,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:31:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:31:57,121 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) [2022-07-21 09:31:57,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 09:31:58,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:31:58,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:31:58,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-21 09:31:58,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:31:58,295 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 8 [2022-07-21 09:31:58,362 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 22 treesize of output 25 [2022-07-21 09:31:58,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:31:58,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-07-21 09:31:59,235 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_33| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_33|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_18|) 16)) (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_33| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_18|)))) is different from true [2022-07-21 09:32:00,071 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_34| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_34| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_19|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_19|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_34|) 16)))) is different from true [2022-07-21 09:32:00,906 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_35| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_20| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_35| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_20|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_20|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_35|) 16)))) is different from true [2022-07-21 09:32:07,046 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_36| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_36| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (not (= (mod .cse0 18446744073709551616) 0)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_36|) 16))))) is different from true [2022-07-21 09:32:08,164 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_37| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_37| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (not (= (mod .cse0 18446744073709551616) 0)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_37|) 16))))) is different from true [2022-07-21 09:32:09,476 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_38| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_38| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_38|) 16)) (not (= (mod .cse0 18446744073709551616) 0))))) is different from true [2022-07-21 09:32:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 93 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 43 not checked. [2022-07-21 09:32:14,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:32:29,048 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 60 treesize of output 42 [2022-07-21 09:32:29,052 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 198 treesize of output 190 [2022-07-21 09:32:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-21 09:32:29,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872365268] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:32:29,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:32:29,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 13] total 48 [2022-07-21 09:32:29,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133723834] [2022-07-21 09:32:29,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:32:29,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-21 09:32:29,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-21 09:32:29,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1591, Unknown=12, NotChecked=510, Total=2256 [2022-07-21 09:32:29,160 INFO L87 Difference]: Start difference. First operand 857 states and 1307 transitions. Second operand has 48 states, 46 states have (on average 4.0) internal successors, (184), 41 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2022-07-21 09:33:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:52,509 INFO L93 Difference]: Finished difference Result 1587 states and 2643 transitions. [2022-07-21 09:33:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-21 09:33:52,511 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 4.0) internal successors, (184), 41 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) Word has length 154 [2022-07-21 09:33:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:52,522 INFO L225 Difference]: With dead ends: 1587 [2022-07-21 09:33:52,522 INFO L226 Difference]: Without dead ends: 1283 [2022-07-21 09:33:52,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 314 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 107.4s TimeCoverageRelationStatistics Valid=687, Invalid=5416, Unknown=83, NotChecked=954, Total=7140 [2022-07-21 09:33:52,530 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 830 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 6615 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 12279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 6615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4531 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:52,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1875 Invalid, 12279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 6615 Invalid, 0 Unknown, 4531 Unchecked, 5.1s Time] [2022-07-21 09:33:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-07-21 09:33:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 864. [2022-07-21 09:33:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 543 states have (on average 1.1086556169429098) internal successors, (602), 550 states have internal predecessors, (602), 255 states have call successors, (255), 60 states have call predecessors, (255), 65 states have return successors, (456), 253 states have call predecessors, (456), 253 states have call successors, (456) [2022-07-21 09:33:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1313 transitions. [2022-07-21 09:33:52,692 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1313 transitions. Word has length 154 [2022-07-21 09:33:52,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:52,692 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1313 transitions. [2022-07-21 09:33:52,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 4.0) internal successors, (184), 41 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2022-07-21 09:33:52,693 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1313 transitions. [2022-07-21 09:33:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 09:33:52,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:52,697 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-21 09:33:52,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 09:33:52,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:52,911 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash -836915527, now seen corresponding path program 1 times [2022-07-21 09:33:52,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:52,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903141914] [2022-07-21 09:33:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:33:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:33:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:33:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:33:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:33:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:33:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:33:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:33:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:33:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:33:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:33:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 09:33:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 09:33:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 09:33:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:33:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 09:33:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 44 proven. 23 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-21 09:33:53,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:53,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903141914] [2022-07-21 09:33:53,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903141914] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:53,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858341031] [2022-07-21 09:33:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:53,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:53,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:33:53,470 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) [2022-07-21 09:33:53,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 09:33:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-21 09:33:54,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:33:54,069 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 8 [2022-07-21 09:33:54,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:33:54,548 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 17 treesize of output 19 [2022-07-21 09:33:54,579 INFO L356 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2022-07-21 09:33:54,579 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 3 case distinctions, treesize of input 30 treesize of output 42 [2022-07-21 09:33:54,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 20 treesize of output 8 [2022-07-21 09:33:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 39 proven. 100 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 09:33:56,474 INFO L328 TraceCheckSpWp]: Computing backward predicates...