./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_cursor_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 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:57:27,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:57:27,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:57:27,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:57:27,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:57:27,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:57:27,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:57:27,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:57:27,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:57:27,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:57:27,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:57:27,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:57:27,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:57:27,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:57:27,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:57:27,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:57:27,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:57:27,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:57:27,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:57:27,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:57:27,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:57:27,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:57:27,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:57:27,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:57:27,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:57:27,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:57:27,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:57:27,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:57:27,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:57:27,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:57:27,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:57:27,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:57:27,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:57:27,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:57:27,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:57:27,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:57:27,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:57:27,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:57:27,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:57:27,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:57:27,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:57:27,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 13:57:27,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:57:27,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:57:27,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:57:27,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:57:27,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:57:27,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:57:27,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:57:27,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:57:27,817 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:57:27,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:57:27,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:57:27,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:57:27,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:57:27,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:57:27,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:57:27,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:57:27,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:57:27,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:57:27,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:57:27,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:57:27,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:57:27,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:57:27,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:57:27,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:57:27,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:57:27,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:57:27,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:57:27,821 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:57:27,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:57:27,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:57:27,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:57:27,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c [2021-12-22 13:57:28,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:57:28,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:57:28,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:57:28,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:57:28,079 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:57:28,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-12-22 13:57:28,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d52aa6e77/e115615e00e94a6c8216e8ba1668ab70/FLAG34e6e6d06 [2021-12-22 13:57:28,763 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:57:28,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-12-22 13:57:28,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d52aa6e77/e115615e00e94a6c8216e8ba1668ab70/FLAG34e6e6d06 [2021-12-22 13:57:28,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d52aa6e77/e115615e00e94a6c8216e8ba1668ab70 [2021-12-22 13:57:28,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:57:28,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:57:28,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:57:28,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:57:28,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:57:28,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:57:28" (1/1) ... [2021-12-22 13:57:28,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e14cdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:28, skipping insertion in model container [2021-12-22 13:57:28,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:57:28" (1/1) ... [2021-12-22 13:57:28,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:57:28,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:57:29,197 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_cursor_eq_harness.i[4492,4505] [2021-12-22 13:57:29,204 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_cursor_eq_harness.i[4552,4565] [2021-12-22 13:57:29,916 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:29,918 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:29,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:29,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:29,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:29,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:29,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:29,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:29,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,207 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:57:30,208 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:57:30,209 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:57:30,210 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:57:30,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:57:30,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:57:30,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:57:30,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:57:30,226 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:57:30,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:57:30,345 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:57:30,411 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:57:30,507 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:57:30,527 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_cursor_eq_harness.i[4492,4505] [2021-12-22 13:57:30,528 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_cursor_eq_harness.i[4552,4565] [2021-12-22 13:57:30,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,573 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,573 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,603 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:57:30,604 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:57:30,604 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:57:30,605 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:57:30,605 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:57:30,606 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:57:30,606 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:57:30,606 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:57:30,607 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:57:30,607 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:57:30,625 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:57:30,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:30,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:57:30,880 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:57:30,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30 WrapperNode [2021-12-22 13:57:30,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:57:30,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:57:30,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:57:30,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:57:30,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:30,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,066 INFO L137 Inliner]: procedures = 691, calls = 2650, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 873 [2021-12-22 13:57:31,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:57:31,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:57:31,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:57:31,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:57:31,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:57:31,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:57:31,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:57:31,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:57:31,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (1/1) ... [2021-12-22 13:57:31,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:57:31,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:31,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:57:31,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:57:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-22 13:57:31,240 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-22 13:57:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-22 13:57:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:57:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 13:57:31,240 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 13:57:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:57:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-12-22 13:57:31,241 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-12-22 13:57:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:57:31,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:57:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 13:57:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:57:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-22 13:57:31,243 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-22 13:57:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 13:57:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:57:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:57:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 13:57:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 13:57:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-22 13:57:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-22 13:57:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 13:57:31,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 13:57:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:57:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 13:57:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-12-22 13:57:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-12-22 13:57:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:57:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-22 13:57:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-22 13:57:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:57:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-12-22 13:57:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-12-22 13:57:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:57:31,454 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:57:31,456 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:57:32,475 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:57:32,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:57:32,489 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:57:32,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:57:32 BoogieIcfgContainer [2021-12-22 13:57:32,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:57:32,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:57:32,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:57:32,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:57:32,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:57:28" (1/3) ... [2021-12-22 13:57:32,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2812c78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:57:32, skipping insertion in model container [2021-12-22 13:57:32,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:30" (2/3) ... [2021-12-22 13:57:32,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2812c78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:57:32, skipping insertion in model container [2021-12-22 13:57:32,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:57:32" (3/3) ... [2021-12-22 13:57:32,499 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2021-12-22 13:57:32,503 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:57:32,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:57:32,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:57:32,560 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:57:32,560 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 13:57:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-12-22 13:57:32,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-22 13:57:32,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:32,600 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-22 13:57:32,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1846687754, now seen corresponding path program 1 times [2021-12-22 13:57:32,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:32,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340136349] [2021-12-22 13:57:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:32,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 13:57:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 13:57:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:57:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:57:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 13:57:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 13:57:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 13:57:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 13:57:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 13:57:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 13:57:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-22 13:57:33,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:33,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340136349] [2021-12-22 13:57:33,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340136349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:33,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:57:33,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 13:57:33,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836153574] [2021-12-22 13:57:33,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:33,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:57:33,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:57:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:57:33,442 INFO L87 Difference]: Start difference. First operand has 134 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 13:57:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:33,710 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2021-12-22 13:57:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:57:33,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2021-12-22 13:57:33,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:33,721 INFO L225 Difference]: With dead ends: 267 [2021-12-22 13:57:33,721 INFO L226 Difference]: Without dead ends: 131 [2021-12-22 13:57:33,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:57:33,727 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 102 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:33,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 196 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:57:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-22 13:57:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-12-22 13:57:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 77 states have internal predecessors, (92), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-22 13:57:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 171 transitions. [2021-12-22 13:57:33,767 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 171 transitions. Word has length 102 [2021-12-22 13:57:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:33,768 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 171 transitions. [2021-12-22 13:57:33,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 13:57:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 171 transitions. [2021-12-22 13:57:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-22 13:57:33,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:33,771 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-22 13:57:33,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:57:33,771 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:33,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash -192509010, now seen corresponding path program 1 times [2021-12-22 13:57:33,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:33,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44781454] [2021-12-22 13:57:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:33,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 13:57:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 13:57:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:57:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:57:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 13:57:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 13:57:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 13:57:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 13:57:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 13:57:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 13:57:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-22 13:57:34,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:34,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44781454] [2021-12-22 13:57:34,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44781454] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:34,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703322504] [2021-12-22 13:57:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:34,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:34,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:34,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:57:34,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:57:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:34,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 13:57:34,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-22 13:57:35,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:35,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703322504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:35,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:35,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-22 13:57:35,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965318971] [2021-12-22 13:57:35,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:35,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:57:35,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:35,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:57:35,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:57:35,013 INFO L87 Difference]: Start difference. First operand 128 states and 171 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 13:57:35,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:35,242 INFO L93 Difference]: Finished difference Result 252 states and 341 transitions. [2021-12-22 13:57:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:57:35,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 102 [2021-12-22 13:57:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:35,244 INFO L225 Difference]: With dead ends: 252 [2021-12-22 13:57:35,244 INFO L226 Difference]: Without dead ends: 131 [2021-12-22 13:57:35,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:57:35,246 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 186 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:35,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 343 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:57:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-22 13:57:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-12-22 13:57:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (45), 39 states have call predecessors, (45), 39 states have call successors, (45) [2021-12-22 13:57:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2021-12-22 13:57:35,261 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 102 [2021-12-22 13:57:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:35,262 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2021-12-22 13:57:35,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 13:57:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2021-12-22 13:57:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-22 13:57:35,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:35,264 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-22 13:57:35,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:35,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:35,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:35,492 INFO L85 PathProgramCache]: Analyzing trace with hash -49851437, now seen corresponding path program 1 times [2021-12-22 13:57:35,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:35,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997207492] [2021-12-22 13:57:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:35,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:57:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:57:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:57:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:57:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:57:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 13:57:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 13:57:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 13:57:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 13:57:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:57:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-22 13:57:35,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:35,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997207492] [2021-12-22 13:57:35,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997207492] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:35,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772815824] [2021-12-22 13:57:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:35,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:35,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:35,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:57:35,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:57:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:57:36,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 13:57:36,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:36,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772815824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:36,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:36,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-22 13:57:36,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418727568] [2021-12-22 13:57:36,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:36,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:57:36,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:36,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:57:36,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:57:36,596 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 13:57:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:36,858 INFO L93 Difference]: Finished difference Result 212 states and 290 transitions. [2021-12-22 13:57:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:57:36,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 104 [2021-12-22 13:57:36,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:36,860 INFO L225 Difference]: With dead ends: 212 [2021-12-22 13:57:36,860 INFO L226 Difference]: Without dead ends: 131 [2021-12-22 13:57:36,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:57:36,862 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 206 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:36,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 553 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:57:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-22 13:57:36,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-12-22 13:57:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2021-12-22 13:57:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 177 transitions. [2021-12-22 13:57:36,873 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 177 transitions. Word has length 104 [2021-12-22 13:57:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:36,874 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 177 transitions. [2021-12-22 13:57:36,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 13:57:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 177 transitions. [2021-12-22 13:57:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:57:36,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:36,876 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-22 13:57:36,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:37,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-22 13:57:37,104 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash 160212765, now seen corresponding path program 2 times [2021-12-22 13:57:37,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:37,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661114419] [2021-12-22 13:57:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:37,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:57:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:57:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:57:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:57:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:57:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:57:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:57:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 13:57:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:57:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:57:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-22 13:57:37,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:37,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661114419] [2021-12-22 13:57:37,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661114419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:37,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358240092] [2021-12-22 13:57:37,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:57:37,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:37,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:37,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:57:37,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:57:37,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 13:57:37,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:57:37,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 13:57:37,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-22 13:57:38,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:38,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358240092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:38,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:38,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-12-22 13:57:38,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185989819] [2021-12-22 13:57:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:38,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:57:38,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:57:38,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:57:38,096 INFO L87 Difference]: Start difference. First operand 131 states and 177 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-22 13:57:38,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:38,162 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2021-12-22 13:57:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:57:38,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2021-12-22 13:57:38,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:38,165 INFO L225 Difference]: With dead ends: 143 [2021-12-22 13:57:38,165 INFO L226 Difference]: Without dead ends: 141 [2021-12-22 13:57:38,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:57:38,167 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 16 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:38,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1179 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:57:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-22 13:57:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-12-22 13:57:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 87 states have internal predecessors, (100), 41 states have call successors, (41), 12 states have call predecessors, (41), 14 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2021-12-22 13:57:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2021-12-22 13:57:38,181 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 108 [2021-12-22 13:57:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:38,181 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2021-12-22 13:57:38,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-22 13:57:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2021-12-22 13:57:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 13:57:38,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:38,189 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2021-12-22 13:57:38,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:38,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:38,409 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:38,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1574940187, now seen corresponding path program 1 times [2021-12-22 13:57:38,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:38,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135274278] [2021-12-22 13:57:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:38,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:57:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:57:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:57:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:57:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:57:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:57:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:57:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 13:57:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:57:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:57:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-22 13:57:38,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:38,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135274278] [2021-12-22 13:57:38,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135274278] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:38,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438203076] [2021-12-22 13:57:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:38,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:38,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:38,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:57:38,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 13:57:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:57:39,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 13:57:39,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:39,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438203076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:39,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:39,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-22 13:57:39,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318814072] [2021-12-22 13:57:39,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:39,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:57:39,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:57:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:57:39,406 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 13:57:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:39,611 INFO L93 Difference]: Finished difference Result 245 states and 337 transitions. [2021-12-22 13:57:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:57:39,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 112 [2021-12-22 13:57:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:39,613 INFO L225 Difference]: With dead ends: 245 [2021-12-22 13:57:39,613 INFO L226 Difference]: Without dead ends: 137 [2021-12-22 13:57:39,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:57:39,615 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 205 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:39,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 556 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:57:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-22 13:57:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-22 13:57:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-12-22 13:57:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 186 transitions. [2021-12-22 13:57:39,634 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 186 transitions. Word has length 112 [2021-12-22 13:57:39,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:39,634 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 186 transitions. [2021-12-22 13:57:39,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 13:57:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 186 transitions. [2021-12-22 13:57:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-22 13:57:39,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:39,636 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-22 13:57:39,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:39,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:39,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:39,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash 660367434, now seen corresponding path program 1 times [2021-12-22 13:57:39,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:39,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353966820] [2021-12-22 13:57:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:39,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:57:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:57:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:57:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:57:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:57:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:57:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:57:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 13:57:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:57:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 13:57:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-22 13:57:40,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353966820] [2021-12-22 13:57:40,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353966820] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126428524] [2021-12-22 13:57:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:40,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:40,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:40,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:57:40,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 13:57:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:40,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 129 conjunts are in the unsatisfiable core [2021-12-22 13:57:40,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:41,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:57:41,491 INFO L353 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-22 13:57:41,492 INFO L387 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 1 case distinctions, treesize of input 30 treesize of output 29 [2021-12-22 13:57:42,607 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 13:57:42,607 INFO L387 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 35 treesize of output 15 [2021-12-22 13:57:42,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-22 13:57:42,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-22 13:57:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 13:57:42,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:57:53,138 INFO L387 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 64 treesize of output 52 [2021-12-22 13:57:53,142 INFO L387 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 52 treesize of output 40 [2021-12-22 13:57:54,958 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_401 Int) (|ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| Int)) (let ((.cse1 (store (store (select |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|)) (+ 8 |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset|) v_ArrVal_401))) (let ((.cse0 (mod (select (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| .cse1) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|) 18446744073709551616))) (or (and (not (= .cse0 0)) (<= 0 |c_#StackHeapBarrier|)) (= .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset|) 18446744073709551616)))))) is different from false [2021-12-22 13:57:54,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126428524] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:54,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 13:57:54,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24] total 34 [2021-12-22 13:57:54,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271687356] [2021-12-22 13:57:54,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 13:57:54,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-22 13:57:54,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-22 13:57:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2268, Unknown=4, NotChecked=96, Total=2550 [2021-12-22 13:57:54,988 INFO L87 Difference]: Start difference. First operand 137 states and 186 transitions. Second operand has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 15 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) [2021-12-22 13:58:00,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:58:00,459 INFO L93 Difference]: Finished difference Result 546 states and 783 transitions. [2021-12-22 13:58:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-22 13:58:00,460 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 15 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) Word has length 114 [2021-12-22 13:58:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:58:00,469 INFO L225 Difference]: With dead ends: 546 [2021-12-22 13:58:00,469 INFO L226 Difference]: Without dead ends: 472 [2021-12-22 13:58:00,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 183 SyntacticMatches, 11 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=907, Invalid=8993, Unknown=4, NotChecked=196, Total=10100 [2021-12-22 13:58:00,474 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 500 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 4289 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 5394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 4289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:58:00,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 1628 Invalid, 5394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 4289 Invalid, 0 Unknown, 676 Unchecked, 3.3s Time] [2021-12-22 13:58:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-22 13:58:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 298. [2021-12-22 13:58:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 185 states have (on average 1.1837837837837837) internal successors, (219), 192 states have internal predecessors, (219), 81 states have call successors, (81), 25 states have call predecessors, (81), 31 states have return successors, (103), 80 states have call predecessors, (103), 79 states have call successors, (103) [2021-12-22 13:58:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 403 transitions. [2021-12-22 13:58:00,547 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 403 transitions. Word has length 114 [2021-12-22 13:58:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:58:00,548 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 403 transitions. [2021-12-22 13:58:00,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 15 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) [2021-12-22 13:58:00,548 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 403 transitions. [2021-12-22 13:58:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 13:58:00,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:58:00,550 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-22 13:58:00,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 13:58:00,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:58:00,775 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:58:00,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:58:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash 224274962, now seen corresponding path program 2 times [2021-12-22 13:58:00,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:58:00,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763721601] [2021-12-22 13:58:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:00,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:58:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:58:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:58:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:58:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:58:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:58:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:58:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:58:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:58:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 13:58:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 13:58:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:58:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 13:58:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:58:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-22 13:58:01,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:58:01,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763721601] [2021-12-22 13:58:01,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763721601] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:58:01,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43210291] [2021-12-22 13:58:01,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:58:01,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:58:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:58:01,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:58:01,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 13:58:01,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 13:58:01,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:58:01,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-22 13:58:01,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:58:01,835 INFO L387 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 [2021-12-22 13:58:02,171 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-22 13:58:02,171 INFO L387 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 1 case distinctions, treesize of input 30 treesize of output 29 [2021-12-22 13:58:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 60 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 13:58:06,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:58:07,978 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_478 Int) (|ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base|) |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|)) (+ |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| 8) v_ArrVal_478)) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|) 18446744073709551616) 0)) is different from false [2021-12-22 13:58:07,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43210291] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:58:07,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 13:58:07,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2021-12-22 13:58:07,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628852012] [2021-12-22 13:58:07,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 13:58:07,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 13:58:07,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:58:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 13:58:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=885, Unknown=2, NotChecked=60, Total=1056 [2021-12-22 13:58:07,987 INFO L87 Difference]: Start difference. First operand 298 states and 403 transitions. Second operand has 26 states, 24 states have (on average 4.25) internal successors, (102), 22 states have internal predecessors, (102), 9 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2021-12-22 13:58:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:58:16,967 INFO L93 Difference]: Finished difference Result 587 states and 783 transitions. [2021-12-22 13:58:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-22 13:58:16,968 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.25) internal successors, (102), 22 states have internal predecessors, (102), 9 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 118 [2021-12-22 13:58:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:58:16,970 INFO L225 Difference]: With dead ends: 587 [2021-12-22 13:58:16,971 INFO L226 Difference]: Without dead ends: 369 [2021-12-22 13:58:16,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 201 SyntacticMatches, 14 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=559, Invalid=3853, Unknown=14, NotChecked=130, Total=4556 [2021-12-22 13:58:16,973 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 187 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 892 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 13:58:16,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1614 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 996 Invalid, 0 Unknown, 892 Unchecked, 0.7s Time] [2021-12-22 13:58:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-22 13:58:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 346. [2021-12-22 13:58:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 221 states have (on average 1.167420814479638) internal successors, (258), 230 states have internal predecessors, (258), 86 states have call successors, (86), 30 states have call predecessors, (86), 38 states have return successors, (118), 85 states have call predecessors, (118), 84 states have call successors, (118) [2021-12-22 13:58:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 462 transitions. [2021-12-22 13:58:16,999 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 462 transitions. Word has length 118 [2021-12-22 13:58:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:58:17,000 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 462 transitions. [2021-12-22 13:58:17,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.25) internal successors, (102), 22 states have internal predecessors, (102), 9 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2021-12-22 13:58:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 462 transitions. [2021-12-22 13:58:17,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-22 13:58:17,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:58:17,003 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 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] [2021-12-22 13:58:17,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 13:58:17,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:58:17,229 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:58:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:58:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash -422342713, now seen corresponding path program 1 times [2021-12-22 13:58:17,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:58:17,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671242171] [2021-12-22 13:58:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:17,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:58:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:58:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:58:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:58:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:58:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:58:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:58:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:58:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:58:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 13:58:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:58:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:58:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 13:58:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 13:58:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 13:58:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-22 13:58:17,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:58:17,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671242171] [2021-12-22 13:58:17,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671242171] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:58:17,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980336872] [2021-12-22 13:58:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:17,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:58:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:58:17,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:58:17,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 13:58:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:18,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 13:58:18,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:58:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-22 13:58:18,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:58:18,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980336872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:58:18,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:58:18,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2021-12-22 13:58:18,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999256152] [2021-12-22 13:58:18,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:58:18,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:58:18,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:58:18,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:58:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-22 13:58:18,374 INFO L87 Difference]: Start difference. First operand 346 states and 462 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-22 13:58:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:58:18,501 INFO L93 Difference]: Finished difference Result 582 states and 766 transitions. [2021-12-22 13:58:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:58:18,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 125 [2021-12-22 13:58:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:58:18,504 INFO L225 Difference]: With dead ends: 582 [2021-12-22 13:58:18,504 INFO L226 Difference]: Without dead ends: 350 [2021-12-22 13:58:18,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-12-22 13:58:18,506 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 12 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:58:18,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1273 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:58:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-22 13:58:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-22 13:58:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 224 states have (on average 1.1607142857142858) internal successors, (260), 234 states have internal predecessors, (260), 86 states have call successors, (86), 30 states have call predecessors, (86), 39 states have return successors, (120), 85 states have call predecessors, (120), 84 states have call successors, (120) [2021-12-22 13:58:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 466 transitions. [2021-12-22 13:58:18,531 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 466 transitions. Word has length 125 [2021-12-22 13:58:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:58:18,531 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 466 transitions. [2021-12-22 13:58:18,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-22 13:58:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 466 transitions. [2021-12-22 13:58:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-22 13:58:18,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:58:18,533 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 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] [2021-12-22 13:58:18,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 13:58:18,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:58:18,748 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:58:18,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:58:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1861715124, now seen corresponding path program 1 times [2021-12-22 13:58:18,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:58:18,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598421969] [2021-12-22 13:58:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:18,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:58:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:58:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:58:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:18,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:58:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:18,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:58:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:58:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:58:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:58:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:58:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 13:58:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:58:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:58:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:58:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:58:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 13:58:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-22 13:58:19,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:58:19,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598421969] [2021-12-22 13:58:19,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598421969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:58:19,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337636655] [2021-12-22 13:58:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:19,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:58:19,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:58:19,224 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) [2021-12-22 13:58:19,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 13:58:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:19,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:58:19,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:58:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-22 13:58:19,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:58:19,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337636655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:58:19,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:58:19,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-22 13:58:19,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711690342] [2021-12-22 13:58:19,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:58:19,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:58:19,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:58:19,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:58:19,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:58:19,836 INFO L87 Difference]: Start difference. First operand 350 states and 466 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 13:58:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:58:20,002 INFO L93 Difference]: Finished difference Result 622 states and 854 transitions. [2021-12-22 13:58:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:58:20,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2021-12-22 13:58:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:58:20,005 INFO L225 Difference]: With dead ends: 622 [2021-12-22 13:58:20,005 INFO L226 Difference]: Without dead ends: 350 [2021-12-22 13:58:20,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:58:20,007 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 17 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:58:20,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 597 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2021-12-22 13:58:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-22 13:58:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-22 13:58:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 224 states have (on average 1.1473214285714286) internal successors, (257), 234 states have internal predecessors, (257), 86 states have call successors, (86), 30 states have call predecessors, (86), 39 states have return successors, (120), 85 states have call predecessors, (120), 84 states have call successors, (120) [2021-12-22 13:58:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 463 transitions. [2021-12-22 13:58:20,031 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 463 transitions. Word has length 127 [2021-12-22 13:58:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:58:20,031 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 463 transitions. [2021-12-22 13:58:20,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 13:58:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 463 transitions. [2021-12-22 13:58:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-22 13:58:20,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:58:20,033 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 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] [2021-12-22 13:58:20,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 13:58:20,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-22 13:58:20,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:58:20,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:58:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash -968228786, now seen corresponding path program 1 times [2021-12-22 13:58:20,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:58:20,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42917645] [2021-12-22 13:58:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:20,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:58:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:58:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:58:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:58:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:58:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:58:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:58:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:58:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:58:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 13:58:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:58:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:58:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:58:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:58:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 13:58:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-22 13:58:20,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:58:20,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42917645] [2021-12-22 13:58:20,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42917645] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:58:20,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173483332] [2021-12-22 13:58:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:20,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:58:20,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:58:20,657 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) [2021-12-22 13:58:20,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 13:58:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:21,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-22 13:58:21,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:58:21,349 INFO L353 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-12-22 13:58:21,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 45 [2021-12-22 13:58:21,445 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-22 13:58:21,446 INFO L387 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 44 treesize of output 24 [2021-12-22 13:58:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 76 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-22 13:58:21,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:58:21,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173483332] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:58:21,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 13:58:21,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 20 [2021-12-22 13:58:21,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684889643] [2021-12-22 13:58:21,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 13:58:21,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-22 13:58:21,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:58:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-22 13:58:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2021-12-22 13:58:21,960 INFO L87 Difference]: Start difference. First operand 350 states and 463 transitions. Second operand has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 18 states have internal predecessors, (108), 8 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2021-12-22 13:58:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:58:23,577 INFO L93 Difference]: Finished difference Result 620 states and 848 transitions. [2021-12-22 13:58:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 13:58:23,578 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 18 states have internal predecessors, (108), 8 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) Word has length 127 [2021-12-22 13:58:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:58:23,580 INFO L225 Difference]: With dead ends: 620 [2021-12-22 13:58:23,581 INFO L226 Difference]: Without dead ends: 426 [2021-12-22 13:58:23,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 231 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2021-12-22 13:58:23,582 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 133 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:58:23,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 953 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1743 Invalid, 0 Unknown, 409 Unchecked, 1.2s Time] [2021-12-22 13:58:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-12-22 13:58:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 360. [2021-12-22 13:58:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 232 states have (on average 1.1422413793103448) internal successors, (265), 240 states have internal predecessors, (265), 88 states have call successors, (88), 32 states have call predecessors, (88), 39 states have return successors, (120), 87 states have call predecessors, (120), 86 states have call successors, (120) [2021-12-22 13:58:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 473 transitions. [2021-12-22 13:58:23,609 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 473 transitions. Word has length 127 [2021-12-22 13:58:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:58:23,609 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 473 transitions. [2021-12-22 13:58:23,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 18 states have internal predecessors, (108), 8 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2021-12-22 13:58:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 473 transitions. [2021-12-22 13:58:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-22 13:58:23,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:58:23,612 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2021-12-22 13:58:23,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 13:58:23,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 13:58:23,823 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:58:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:58:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2040741793, now seen corresponding path program 1 times [2021-12-22 13:58:23,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:58:23,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286153922] [2021-12-22 13:58:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:23,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:58:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:58:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:58:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:58:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 13:58:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:58:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat