./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_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 e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:32:15,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:32:15,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:32:15,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:32:15,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:32:15,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:32:15,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:32:15,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:32:15,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:32:15,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:32:15,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:32:15,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:32:15,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:32:15,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:32:15,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:32:15,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:32:15,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:32:15,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:32:15,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:32:15,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:32:15,756 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:32:15,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:32:15,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:32:15,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:32:15,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:32:15,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:32:15,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:32:15,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:32:15,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:32:15,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:32:15,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:32:15,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:32:15,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:32:15,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:32:15,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:32:15,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:32:15,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:32:15,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:32:15,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:32:15,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:32:15,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:32:15,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:32:15,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:32:15,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:32:15,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:32:15,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:32:15,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:32:15,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:32:15,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:32:15,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:32:15,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:32:15,816 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:32:15,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:32:15,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:32:15,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:32:15,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:32:15,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:32:15,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:32:15,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:32:15,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:32:15,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:32:15,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:32:15,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:32:15,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:32:15,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:32:15,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:32:15,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:32:15,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:32:15,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:32:15,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:32:15,827 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:32:15,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:32:15,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:32:15,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2022-07-21 09:32:16,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:32:16,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:32:16,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:32:16,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:32:16,167 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:32:16,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2022-07-21 09:32:16,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c3d1bf2/c302c841639941c888fa28c6a5ddab6f/FLAG6817b365b [2022-07-21 09:32:16,940 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:32:16,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2022-07-21 09:32:16,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c3d1bf2/c302c841639941c888fa28c6a5ddab6f/FLAG6817b365b [2022-07-21 09:32:17,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c3d1bf2/c302c841639941c888fa28c6a5ddab6f [2022-07-21 09:32:17,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:32:17,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:32:17,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:32:17,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:32:17,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:32:17,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:32:17" (1/1) ... [2022-07-21 09:32:17,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0c98c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:17, skipping insertion in model container [2022-07-21 09:32:17,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:32:17" (1/1) ... [2022-07-21 09:32:17,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:32:17,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:32:17,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2022-07-21 09:32:17,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2022-07-21 09:32:18,423 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,426 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,427 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,429 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,447 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,447 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,448 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,449 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,732 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:32:18,733 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:32:18,734 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:32:18,735 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:32:18,736 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:32:18,737 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:32:18,737 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:32:18,738 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:32:18,739 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:32:18,739 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:32:18,858 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:32:18,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:18,953 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:32:19,079 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:32:19,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2022-07-21 09:32:19,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2022-07-21 09:32:19,126 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,127 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,127 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,128 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,128 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,133 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,134 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,134 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,135 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:32:19,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:32:19,160 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:32:19,160 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:32:19,161 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:32:19,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:32:19,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:32:19,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:32:19,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:32:19,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:32:19,186 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:32:19,222 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,222 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:32:19,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:32:19,557 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:32:19,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19 WrapperNode [2022-07-21 09:32:19,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:32:19,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:32:19,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:32:19,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:32:19,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,723 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2022-07-21 09:32:19,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:32:19,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:32:19,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:32:19,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:32:19,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:32:19,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:32:19,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:32:19,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:32:19,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (1/1) ... [2022-07-21 09:32:19,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:32:19,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:19,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:32:19,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:32:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2022-07-21 09:32:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2022-07-21 09:32:19,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2022-07-21 09:32:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-21 09:32:19,936 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-21 09:32:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:32:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:32:19,936 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:32:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:32:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:32:19,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:32:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:32:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:32:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:32:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-21 09:32:19,939 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-21 09:32:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:32:19,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:32:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:32:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:32:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:32:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:32:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:32:19,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:32:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-21 09:32:19,941 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-21 09:32:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:32:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:32:19,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-21 09:32:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-21 09:32:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:32:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:32:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:32:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:32:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2022-07-21 09:32:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2022-07-21 09:32:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:32:20,276 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:32:20,277 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:32:21,364 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:32:21,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:32:21,372 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 09:32:21,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:32:21 BoogieIcfgContainer [2022-07-21 09:32:21,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:32:21,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:32:21,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:32:21,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:32:21,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:32:17" (1/3) ... [2022-07-21 09:32:21,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ce7ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:32:21, skipping insertion in model container [2022-07-21 09:32:21,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:32:19" (2/3) ... [2022-07-21 09:32:21,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ce7ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:32:21, skipping insertion in model container [2022-07-21 09:32:21,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:32:21" (3/3) ... [2022-07-21 09:32:21,381 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2022-07-21 09:32:21,393 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:32:21,394 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:32:21,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:32:21,469 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78935903, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43b99dcc [2022-07-21 09:32:21,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:32:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-21 09:32:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 09:32:21,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:21,489 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:21,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash -598164550, now seen corresponding path program 1 times [2022-07-21 09:32:21,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:21,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946287127] [2022-07-21 09:32:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:21,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:32:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:32:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:32:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:32:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:32:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:32:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:32:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:32:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 09:32:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:22,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946287127] [2022-07-21 09:32:22,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946287127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:22,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:32:22,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:32:22,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338319778] [2022-07-21 09:32:22,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:22,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:32:22,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:32:22,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:32:22,325 INFO L87 Difference]: Start difference. First operand has 142 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:22,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:22,542 INFO L93 Difference]: Finished difference Result 280 states and 391 transitions. [2022-07-21 09:32:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:32:22,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2022-07-21 09:32:22,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:22,552 INFO L225 Difference]: With dead ends: 280 [2022-07-21 09:32:22,552 INFO L226 Difference]: Without dead ends: 137 [2022-07-21 09:32:22,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:32:22,559 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 63 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:22,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 207 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:32:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-21 09:32:22,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-07-21 09:32:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 89 states have internal predecessors, (106), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-21 09:32:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2022-07-21 09:32:22,602 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 96 [2022-07-21 09:32:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:22,602 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2022-07-21 09:32:22,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2022-07-21 09:32:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 09:32:22,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:22,606 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:22,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:32:22,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1705408322, now seen corresponding path program 1 times [2022-07-21 09:32:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:22,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121647243] [2022-07-21 09:32:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:32:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:32:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:32:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:32:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:32:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:32:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:32:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:32:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 09:32:22,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:22,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121647243] [2022-07-21 09:32:22,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121647243] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:22,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57877012] [2022-07-21 09:32:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:22,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:22,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:22,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:22,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:32:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:23,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:32:23,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-21 09:32:23,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:23,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57877012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:23,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:23,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-21 09:32:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851679802] [2022-07-21 09:32:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:23,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:32:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:23,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:32:23,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:32:23,608 INFO L87 Difference]: Start difference. First operand 137 states and 177 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:32:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:23,761 INFO L93 Difference]: Finished difference Result 252 states and 333 transitions. [2022-07-21 09:32:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:32:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 96 [2022-07-21 09:32:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:23,765 INFO L225 Difference]: With dead ends: 252 [2022-07-21 09:32:23,765 INFO L226 Difference]: Without dead ends: 140 [2022-07-21 09:32:23,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:32:23,767 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 205 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:23,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 389 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:32:23,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-21 09:32:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-07-21 09:32:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2) internal successors, (108), 92 states have internal predecessors, (108), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2022-07-21 09:32:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2022-07-21 09:32:23,784 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 96 [2022-07-21 09:32:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:23,785 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2022-07-21 09:32:23,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:32:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2022-07-21 09:32:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 09:32:23,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:23,789 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:23,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:24,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:24,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:24,004 INFO L85 PathProgramCache]: Analyzing trace with hash 870874419, now seen corresponding path program 1 times [2022-07-21 09:32:24,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:24,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734123543] [2022-07-21 09:32:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:24,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:32:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:32:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:32:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:32:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:32:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:32:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 09:32:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 09:32:24,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:24,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734123543] [2022-07-21 09:32:24,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734123543] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:24,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590823046] [2022-07-21 09:32:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:24,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:24,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:24,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:24,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:32:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:24,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:32:24,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 09:32:24,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:24,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590823046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:24,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:24,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-21 09:32:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706257397] [2022-07-21 09:32:24,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:24,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:32:24,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:32:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:32:24,921 INFO L87 Difference]: Start difference. First operand 140 states and 183 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-21 09:32:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:25,123 INFO L93 Difference]: Finished difference Result 247 states and 324 transitions. [2022-07-21 09:32:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:32:25,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 102 [2022-07-21 09:32:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:25,126 INFO L225 Difference]: With dead ends: 247 [2022-07-21 09:32:25,126 INFO L226 Difference]: Without dead ends: 140 [2022-07-21 09:32:25,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:32:25,128 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 222 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:25,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 509 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:32:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-21 09:32:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-07-21 09:32:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2) internal successors, (108), 92 states have internal predecessors, (108), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2022-07-21 09:32:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2022-07-21 09:32:25,142 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 102 [2022-07-21 09:32:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:25,143 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2022-07-21 09:32:25,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-21 09:32:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2022-07-21 09:32:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 09:32:25,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:25,145 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:25,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:25,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 09:32:25,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:25,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:25,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1336541160, now seen corresponding path program 2 times [2022-07-21 09:32:25,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:25,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323041520] [2022-07-21 09:32:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:25,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:32:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:32:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:32:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:32:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:32:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 09:32:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 09:32:25,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:25,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323041520] [2022-07-21 09:32:25,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323041520] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:25,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861658964] [2022-07-21 09:32:25,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:32:25,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:25,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:25,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:32:26,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:32:26,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:32:26,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 09:32:26,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 09:32:26,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:26,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861658964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:26,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:26,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2022-07-21 09:32:26,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970977549] [2022-07-21 09:32:26,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:26,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:32:26,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:26,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:32:26,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:32:26,672 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-21 09:32:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:26,804 INFO L93 Difference]: Finished difference Result 231 states and 303 transitions. [2022-07-21 09:32:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:32:26,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 108 [2022-07-21 09:32:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:26,807 INFO L225 Difference]: With dead ends: 231 [2022-07-21 09:32:26,807 INFO L226 Difference]: Without dead ends: 137 [2022-07-21 09:32:26,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:32:26,808 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 80 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:26,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 970 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:32:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-21 09:32:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-07-21 09:32:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 89 states have internal predecessors, (105), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-21 09:32:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2022-07-21 09:32:26,832 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 108 [2022-07-21 09:32:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:26,833 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2022-07-21 09:32:26,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-21 09:32:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2022-07-21 09:32:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 09:32:26,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:26,839 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:26,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:27,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:27,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:27,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:27,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1211043646, now seen corresponding path program 1 times [2022-07-21 09:32:27,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:27,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321241568] [2022-07-21 09:32:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:27,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:32:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:32:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:32:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:32:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 09:32:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-21 09:32:27,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:27,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321241568] [2022-07-21 09:32:27,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321241568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:27,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:32:27,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:32:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171816072] [2022-07-21 09:32:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:27,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:32:27,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:27,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:32:27,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:32:27,448 INFO L87 Difference]: Start difference. First operand 137 states and 176 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 09:32:28,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:28,022 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2022-07-21 09:32:28,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:32:28,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2022-07-21 09:32:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:28,024 INFO L225 Difference]: With dead ends: 149 [2022-07-21 09:32:28,024 INFO L226 Difference]: Without dead ends: 147 [2022-07-21 09:32:28,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:32:28,025 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 89 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:28,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 600 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:32:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-21 09:32:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2022-07-21 09:32:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 96 states have internal predecessors, (111), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2022-07-21 09:32:28,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2022-07-21 09:32:28,037 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 120 [2022-07-21 09:32:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:28,038 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2022-07-21 09:32:28,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 09:32:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2022-07-21 09:32:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 09:32:28,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:28,040 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:28,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:32:28,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1628651524, now seen corresponding path program 1 times [2022-07-21 09:32:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:28,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618461045] [2022-07-21 09:32:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:28,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:32:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:32:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:32:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:32:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 09:32:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-21 09:32:28,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618461045] [2022-07-21 09:32:28,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618461045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:28,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:32:28,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:32:28,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420984373] [2022-07-21 09:32:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:28,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:32:28,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:32:28,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:32:28,602 INFO L87 Difference]: Start difference. First operand 146 states and 190 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:32:29,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:29,353 INFO L93 Difference]: Finished difference Result 236 states and 320 transitions. [2022-07-21 09:32:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:32:29,353 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2022-07-21 09:32:29,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:29,355 INFO L225 Difference]: With dead ends: 236 [2022-07-21 09:32:29,355 INFO L226 Difference]: Without dead ends: 170 [2022-07-21 09:32:29,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:32:29,356 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 173 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:29,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 541 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:32:29,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-21 09:32:29,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 164. [2022-07-21 09:32:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 109 states have (on average 1.201834862385321) internal successors, (131), 114 states have internal predecessors, (131), 38 states have call successors, (38), 13 states have call predecessors, (38), 16 states have return successors, (56), 36 states have call predecessors, (56), 37 states have call successors, (56) [2022-07-21 09:32:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 225 transitions. [2022-07-21 09:32:29,387 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 225 transitions. Word has length 124 [2022-07-21 09:32:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:29,389 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 225 transitions. [2022-07-21 09:32:29,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:32:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 225 transitions. [2022-07-21 09:32:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 09:32:29,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:29,392 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:29,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:32:29,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:29,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash 348787846, now seen corresponding path program 1 times [2022-07-21 09:32:29,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:29,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842701521] [2022-07-21 09:32:29,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:29,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:32:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:32:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:32:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:32:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 09:32:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-21 09:32:29,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:29,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842701521] [2022-07-21 09:32:29,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842701521] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:29,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285492445] [2022-07-21 09:32:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:29,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:29,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:29,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:29,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:32:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:30,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-21 09:32:30,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:30,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:32:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 09:32:30,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:30,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285492445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:30,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:30,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-21 09:32:30,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609182216] [2022-07-21 09:32:30,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:30,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:32:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:32:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:32:30,747 INFO L87 Difference]: Start difference. First operand 164 states and 225 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-21 09:32:30,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:30,872 INFO L93 Difference]: Finished difference Result 320 states and 437 transitions. [2022-07-21 09:32:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:32:30,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 124 [2022-07-21 09:32:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:30,875 INFO L225 Difference]: With dead ends: 320 [2022-07-21 09:32:30,875 INFO L226 Difference]: Without dead ends: 177 [2022-07-21 09:32:30,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:32:30,877 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 32 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:30,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1117 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-07-21 09:32:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-21 09:32:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-07-21 09:32:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 121 states have (on average 1.2066115702479339) internal successors, (146), 126 states have internal predecessors, (146), 38 states have call successors, (38), 14 states have call predecessors, (38), 17 states have return successors, (55), 36 states have call predecessors, (55), 37 states have call successors, (55) [2022-07-21 09:32:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2022-07-21 09:32:30,893 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 239 transitions. Word has length 124 [2022-07-21 09:32:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:30,893 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 239 transitions. [2022-07-21 09:32:30,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-21 09:32:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 239 transitions. [2022-07-21 09:32:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 09:32:30,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:30,895 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:30,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:31,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:31,111 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:31,112 INFO L85 PathProgramCache]: Analyzing trace with hash 320287556, now seen corresponding path program 2 times [2022-07-21 09:32:31,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:31,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377551018] [2022-07-21 09:32:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:31,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:32:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:32:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:32:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:32:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:32:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 09:32:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-21 09:32:31,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:31,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377551018] [2022-07-21 09:32:31,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377551018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:31,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101398788] [2022-07-21 09:32:31,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:32:31,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:31,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:31,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:31,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:32:32,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:32:32,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:32:32,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:32:32,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 09:32:32,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:32,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101398788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:32,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:32,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 09:32:32,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102537727] [2022-07-21 09:32:32,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:32,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:32:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:32,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:32:32,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:32:32,130 INFO L87 Difference]: Start difference. First operand 177 states and 239 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:32,160 INFO L93 Difference]: Finished difference Result 312 states and 430 transitions. [2022-07-21 09:32:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:32:32,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2022-07-21 09:32:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:32,164 INFO L225 Difference]: With dead ends: 312 [2022-07-21 09:32:32,165 INFO L226 Difference]: Without dead ends: 169 [2022-07-21 09:32:32,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:32:32,166 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 20 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:32,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 520 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:32:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-21 09:32:32,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2022-07-21 09:32:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 116 states have internal predecessors, (136), 38 states have call successors, (38), 14 states have call predecessors, (38), 15 states have return successors, (48), 36 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-21 09:32:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 222 transitions. [2022-07-21 09:32:32,182 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 222 transitions. Word has length 124 [2022-07-21 09:32:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:32,182 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 222 transitions. [2022-07-21 09:32:32,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 222 transitions. [2022-07-21 09:32:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 09:32:32,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:32,185 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 09:32:32,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:32,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:32,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1892680832, now seen corresponding path program 3 times [2022-07-21 09:32:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:32,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420663116] [2022-07-21 09:32:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:32,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 09:32:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:32:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:32:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:32:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:32:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 09:32:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:32:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:32:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-21 09:32:32,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420663116] [2022-07-21 09:32:32,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420663116] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751653994] [2022-07-21 09:32:32,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:32:32,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:32,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:32,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:32,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:32:33,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-21 09:32:33,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:32:33,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:32:33,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:32:33,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:32:34,303 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-21 09:32:34,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2022-07-21 09:32:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-21 09:32:34,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751653994] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:32:34,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:32:34,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2022-07-21 09:32:34,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177040077] [2022-07-21 09:32:34,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:32:34,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:32:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:34,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:32:34,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:32:34,340 INFO L87 Difference]: Start difference. First operand 167 states and 222 transitions. Second operand has 26 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 4 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:32:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:36,711 INFO L93 Difference]: Finished difference Result 401 states and 559 transitions. [2022-07-21 09:32:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-21 09:32:36,711 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 4 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 128 [2022-07-21 09:32:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:36,714 INFO L225 Difference]: With dead ends: 401 [2022-07-21 09:32:36,714 INFO L226 Difference]: Without dead ends: 266 [2022-07-21 09:32:36,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 270 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=511, Invalid=3029, Unknown=0, NotChecked=0, Total=3540 [2022-07-21 09:32:36,716 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 354 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 357 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:36,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1182 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2299 Invalid, 0 Unknown, 357 Unchecked, 1.5s Time] [2022-07-21 09:32:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-21 09:32:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 215. [2022-07-21 09:32:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 159 states have internal predecessors, (184), 42 states have call successors, (42), 16 states have call predecessors, (42), 20 states have return successors, (67), 39 states have call predecessors, (67), 41 states have call successors, (67) [2022-07-21 09:32:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 293 transitions. [2022-07-21 09:32:36,736 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 293 transitions. Word has length 128 [2022-07-21 09:32:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:36,737 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 293 transitions. [2022-07-21 09:32:36,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 4 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:32:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 293 transitions. [2022-07-21 09:32:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:32:36,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:36,740 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:36,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 09:32:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:36,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash -793075011, now seen corresponding path program 1 times [2022-07-21 09:32:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:36,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882455938] [2022-07-21 09:32:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:32:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:32:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:32:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:32:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:32:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-21 09:32:37,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:37,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882455938] [2022-07-21 09:32:37,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882455938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:37,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340868200] [2022-07-21 09:32:37,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:37,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:37,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:37,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:37,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:32:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:37,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:32:37,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-21 09:32:37,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:37,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340868200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:37,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:37,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 09:32:37,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350072889] [2022-07-21 09:32:37,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:37,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:32:37,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:37,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:32:37,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:32:37,672 INFO L87 Difference]: Start difference. First operand 215 states and 293 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:37,696 INFO L93 Difference]: Finished difference Result 416 states and 585 transitions. [2022-07-21 09:32:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:32:37,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-21 09:32:37,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:37,698 INFO L225 Difference]: With dead ends: 416 [2022-07-21 09:32:37,699 INFO L226 Difference]: Without dead ends: 233 [2022-07-21 09:32:37,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:32:37,700 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 9 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:37,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 513 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:32:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-21 09:32:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 221. [2022-07-21 09:32:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 158 states have (on average 1.2025316455696202) internal successors, (190), 165 states have internal predecessors, (190), 42 states have call successors, (42), 16 states have call predecessors, (42), 20 states have return successors, (67), 39 states have call predecessors, (67), 41 states have call successors, (67) [2022-07-21 09:32:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 299 transitions. [2022-07-21 09:32:37,721 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 299 transitions. Word has length 130 [2022-07-21 09:32:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:37,721 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 299 transitions. [2022-07-21 09:32:37,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 299 transitions. [2022-07-21 09:32:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:32:37,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:37,724 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:37,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:32:37,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:37,947 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:37,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:37,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2144460229, now seen corresponding path program 1 times [2022-07-21 09:32:37,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:37,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614548503] [2022-07-21 09:32:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:37,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:32:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:32:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:32:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:32:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:32:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-21 09:32:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614548503] [2022-07-21 09:32:38,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614548503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:38,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:32:38,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:32:38,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849617359] [2022-07-21 09:32:38,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:38,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:32:38,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:32:38,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:32:38,258 INFO L87 Difference]: Start difference. First operand 221 states and 299 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 09:32:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:38,637 INFO L93 Difference]: Finished difference Result 444 states and 635 transitions. [2022-07-21 09:32:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:32:38,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 130 [2022-07-21 09:32:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:38,640 INFO L225 Difference]: With dead ends: 444 [2022-07-21 09:32:38,640 INFO L226 Difference]: Without dead ends: 263 [2022-07-21 09:32:38,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:32:38,641 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 91 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:38,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 334 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:32:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-21 09:32:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 235. [2022-07-21 09:32:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 171 states have (on average 1.1988304093567252) internal successors, (205), 179 states have internal predecessors, (205), 42 states have call successors, (42), 16 states have call predecessors, (42), 21 states have return successors, (72), 39 states have call predecessors, (72), 41 states have call successors, (72) [2022-07-21 09:32:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 319 transitions. [2022-07-21 09:32:38,655 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 319 transitions. Word has length 130 [2022-07-21 09:32:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:38,656 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 319 transitions. [2022-07-21 09:32:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 09:32:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 319 transitions. [2022-07-21 09:32:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:32:38,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:38,657 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:38,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:32:38,658 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1892341629, now seen corresponding path program 1 times [2022-07-21 09:32:38,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:38,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276346362] [2022-07-21 09:32:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:38,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:32:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:32:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:32:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:32:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:32:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-21 09:32:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:38,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276346362] [2022-07-21 09:32:38,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276346362] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:38,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209439223] [2022-07-21 09:32:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:38,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:38,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:38,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:39,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:32:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:39,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:32:39,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-21 09:32:39,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:39,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209439223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:39,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:39,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-21 09:32:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438997200] [2022-07-21 09:32:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:39,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:32:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:32:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:32:39,543 INFO L87 Difference]: Start difference. First operand 235 states and 319 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:39,688 INFO L93 Difference]: Finished difference Result 440 states and 627 transitions. [2022-07-21 09:32:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:32:39,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-21 09:32:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:39,691 INFO L225 Difference]: With dead ends: 440 [2022-07-21 09:32:39,691 INFO L226 Difference]: Without dead ends: 237 [2022-07-21 09:32:39,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:32:39,693 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 22 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:39,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 609 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2022-07-21 09:32:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-21 09:32:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2022-07-21 09:32:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 167 states have (on average 1.1796407185628743) internal successors, (197), 175 states have internal predecessors, (197), 42 states have call successors, (42), 16 states have call predecessors, (42), 21 states have return successors, (72), 39 states have call predecessors, (72), 41 states have call successors, (72) [2022-07-21 09:32:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 311 transitions. [2022-07-21 09:32:39,706 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 311 transitions. Word has length 130 [2022-07-21 09:32:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:39,706 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 311 transitions. [2022-07-21 09:32:39,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 311 transitions. [2022-07-21 09:32:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:32:39,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:39,708 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:32:39,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 09:32:39,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:32:39,924 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash -505128901, now seen corresponding path program 2 times [2022-07-21 09:32:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:39,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274256396] [2022-07-21 09:32:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:32:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:32:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:32:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:32:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:32:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-21 09:32:40,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274256396] [2022-07-21 09:32:40,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274256396] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:40,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511706013] [2022-07-21 09:32:40,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:32:40,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:40,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:40,136 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:40,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:32:40,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:32:40,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:32:40,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:32:40,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-21 09:32:40,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:32:40,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511706013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:32:40,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:32:40,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 09:32:40,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470605371] [2022-07-21 09:32:40,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:32:40,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:32:40,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:40,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:32:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:32:40,693 INFO L87 Difference]: Start difference. First operand 231 states and 311 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:40,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:32:40,718 INFO L93 Difference]: Finished difference Result 411 states and 571 transitions. [2022-07-21 09:32:40,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:32:40,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-21 09:32:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:32:40,720 INFO L225 Difference]: With dead ends: 411 [2022-07-21 09:32:40,720 INFO L226 Difference]: Without dead ends: 210 [2022-07-21 09:32:40,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:32:40,722 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 32 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:32:40,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 512 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:32:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-21 09:32:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2022-07-21 09:32:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 144 states have (on average 1.1597222222222223) internal successors, (167), 149 states have internal predecessors, (167), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (59), 39 states have call predecessors, (59), 41 states have call successors, (59) [2022-07-21 09:32:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 268 transitions. [2022-07-21 09:32:40,735 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 268 transitions. Word has length 130 [2022-07-21 09:32:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:32:40,735 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-07-21 09:32:40,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:32:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 268 transitions. [2022-07-21 09:32:40,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:32:40,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:32:40,737 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2022-07-21 09:32:40,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-21 09:32:40,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:32:40,950 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:32:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:32:40,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1883435129, now seen corresponding path program 3 times [2022-07-21 09:32:40,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:32:40,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561106594] [2022-07-21 09:32:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:32:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:32:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:32:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:32:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:32:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:32:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:32:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:32:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:32:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:32:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:32:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:32:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:32:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:32:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:32:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:32:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 09:32:41,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:32:41,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561106594] [2022-07-21 09:32:41,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561106594] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:32:41,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726755162] [2022-07-21 09:32:41,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:32:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:32:41,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:32:41,378 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:32:41,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:32:41,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-21 09:32:41,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:32:41,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:32:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:32:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:32:54,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:32:54,618 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-21 09:32:54,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-21 09:32:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-21 09:32:54,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726755162] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:32:54,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:32:54,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 23 [2022-07-21 09:32:54,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977898128] [2022-07-21 09:32:54,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:32:54,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 09:32:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:32:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 09:32:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=427, Unknown=2, NotChecked=0, Total=506 [2022-07-21 09:32:54,656 INFO L87 Difference]: Start difference. First operand 205 states and 268 transitions. Second operand has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-21 09:33:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:38,437 INFO L93 Difference]: Finished difference Result 388 states and 518 transitions. [2022-07-21 09:33:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 09:33:38,438 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 130 [2022-07-21 09:33:38,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:38,440 INFO L225 Difference]: With dead ends: 388 [2022-07-21 09:33:38,440 INFO L226 Difference]: Without dead ends: 260 [2022-07-21 09:33:38,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 276 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 55.2s TimeCoverageRelationStatistics Valid=327, Invalid=1909, Unknown=20, NotChecked=0, Total=2256 [2022-07-21 09:33:38,442 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 229 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 483 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:38,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 956 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1341 Invalid, 0 Unknown, 483 Unchecked, 1.0s Time] [2022-07-21 09:33:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-21 09:33:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 222. [2022-07-21 09:33:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 157 states have (on average 1.1464968152866242) internal successors, (180), 161 states have internal predecessors, (180), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (67), 42 states have call predecessors, (67), 43 states have call successors, (67) [2022-07-21 09:33:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 291 transitions. [2022-07-21 09:33:38,454 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 291 transitions. Word has length 130 [2022-07-21 09:33:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:38,455 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 291 transitions. [2022-07-21 09:33:38,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-21 09:33:38,455 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 291 transitions. [2022-07-21 09:33:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:33:38,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:38,456 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:33:38,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:33:38,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:33:38,683 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:38,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:38,683 INFO L85 PathProgramCache]: Analyzing trace with hash 933699569, now seen corresponding path program 1 times [2022-07-21 09:33:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:38,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048616792] [2022-07-21 09:33:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:38,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:33:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:33:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:38,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:33:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:33:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:33:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:33:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:33:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-21 09:33:39,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:39,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048616792] [2022-07-21 09:33:39,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048616792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:33:39,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:33:39,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:33:39,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565060559] [2022-07-21 09:33:39,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:33:39,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:33:39,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:33:39,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:33:39,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:33:39,046 INFO L87 Difference]: Start difference. First operand 222 states and 291 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:33:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:39,317 INFO L93 Difference]: Finished difference Result 398 states and 522 transitions. [2022-07-21 09:33:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:33:39,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-21 09:33:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:39,319 INFO L225 Difference]: With dead ends: 398 [2022-07-21 09:33:39,319 INFO L226 Difference]: Without dead ends: 222 [2022-07-21 09:33:39,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:33:39,321 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 62 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:39,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 321 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:33:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-21 09:33:39,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-07-21 09:33:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 157 states have (on average 1.1401273885350318) internal successors, (179), 161 states have internal predecessors, (179), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (67), 42 states have call predecessors, (67), 43 states have call successors, (67) [2022-07-21 09:33:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 290 transitions. [2022-07-21 09:33:39,334 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 290 transitions. Word has length 130 [2022-07-21 09:33:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:39,334 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 290 transitions. [2022-07-21 09:33:39,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:33:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 290 transitions. [2022-07-21 09:33:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:33:39,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:39,336 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:33:39,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 09:33:39,336 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:39,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:39,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1702869584, now seen corresponding path program 1 times [2022-07-21 09:33:39,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:39,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856406474] [2022-07-21 09:33:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:39,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:33:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:33:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:33:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:33:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:33:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:33:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:33:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 09:33:39,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:39,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856406474] [2022-07-21 09:33:39,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856406474] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:39,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102707338] [2022-07-21 09:33:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:39,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:33:40,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:33:40,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:33:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:40,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-21 09:33:40,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:33:40,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:33:44,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:33:44,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-21 09:33:46,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:33:46,882 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-21 09:33:46,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 1 [2022-07-21 09:33:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:33:46,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:33:46,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102707338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:33:46,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:33:46,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 24 [2022-07-21 09:33:46,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416381187] [2022-07-21 09:33:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:33:46,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:33:46,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:33:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:33:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=471, Unknown=1, NotChecked=0, Total=552 [2022-07-21 09:33:46,886 INFO L87 Difference]: Start difference. First operand 222 states and 290 transitions. Second operand has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-21 09:33:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:47,092 INFO L93 Difference]: Finished difference Result 499 states and 656 transitions. [2022-07-21 09:33:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:33:47,093 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 130 [2022-07-21 09:33:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:47,095 INFO L225 Difference]: With dead ends: 499 [2022-07-21 09:33:47,095 INFO L226 Difference]: Without dead ends: 309 [2022-07-21 09:33:47,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 143 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=92, Invalid=557, Unknown=1, NotChecked=0, Total=650 [2022-07-21 09:33:47,097 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 43 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:47,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1853 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 142 Unchecked, 0.2s Time] [2022-07-21 09:33:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-21 09:33:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 260. [2022-07-21 09:33:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 190 states have (on average 1.1421052631578947) internal successors, (217), 195 states have internal predecessors, (217), 46 states have call successors, (46), 20 states have call predecessors, (46), 23 states have return successors, (72), 44 states have call predecessors, (72), 45 states have call successors, (72) [2022-07-21 09:33:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 335 transitions. [2022-07-21 09:33:47,111 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 335 transitions. Word has length 130 [2022-07-21 09:33:47,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:47,112 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 335 transitions. [2022-07-21 09:33:47,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-21 09:33:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 335 transitions. [2022-07-21 09:33:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:33:47,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:47,114 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:33:47,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:33:47,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 09:33:47,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:47,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:47,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1674369294, now seen corresponding path program 1 times [2022-07-21 09:33:47,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:47,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857138544] [2022-07-21 09:33:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:47,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:33:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:33:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:33:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:33:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:33:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:33:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 09:33:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 09:33:47,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857138544] [2022-07-21 09:33:47,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857138544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539554288] [2022-07-21 09:33:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:47,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:47,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:33:47,960 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:33:47,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:33:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:48,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-21 09:33:48,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:33:48,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:33:48,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:33:49,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-21 09:33:49,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-21 09:33:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 09:33:49,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:33:49,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539554288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:33:49,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:33:49,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 29 [2022-07-21 09:33:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645565982] [2022-07-21 09:33:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:33:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:33:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:33:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:33:49,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-07-21 09:33:49,125 INFO L87 Difference]: Start difference. First operand 260 states and 335 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-21 09:33:49,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:49,468 INFO L93 Difference]: Finished difference Result 509 states and 668 transitions. [2022-07-21 09:33:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:33:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 130 [2022-07-21 09:33:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:49,471 INFO L225 Difference]: With dead ends: 509 [2022-07-21 09:33:49,471 INFO L226 Difference]: Without dead ends: 316 [2022-07-21 09:33:49,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-07-21 09:33:49,472 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 76 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:49,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1363 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 175 Unchecked, 0.2s Time] [2022-07-21 09:33:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-21 09:33:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 282. [2022-07-21 09:33:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 209 states have (on average 1.1291866028708133) internal successors, (236), 215 states have internal predecessors, (236), 46 states have call successors, (46), 22 states have call predecessors, (46), 26 states have return successors, (72), 44 states have call predecessors, (72), 45 states have call successors, (72) [2022-07-21 09:33:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 354 transitions. [2022-07-21 09:33:49,488 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 354 transitions. Word has length 130 [2022-07-21 09:33:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:49,488 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 354 transitions. [2022-07-21 09:33:49,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-21 09:33:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 354 transitions. [2022-07-21 09:33:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 09:33:49,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:49,490 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:33:49,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:33:49,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 09:33:49,715 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1989368778, now seen corresponding path program 2 times [2022-07-21 09:33:49,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:49,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354104195] [2022-07-21 09:33:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:49,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:49,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:49,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:33:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:33:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:33:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:50,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:33:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:33:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 09:33:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:50,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 09:33:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 09:33:50,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:50,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354104195] [2022-07-21 09:33:50,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354104195] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:50,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681023828] [2022-07-21 09:33:50,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:33:50,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:50,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:33:50,081 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:33:50,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:33:50,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:33:50,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:33:50,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 09:33:50,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:33:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 09:33:50,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:33:50,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681023828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:33:50,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:33:50,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-21 09:33:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073068325] [2022-07-21 09:33:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:33:50,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:33:50,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:33:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:33:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:33:50,860 INFO L87 Difference]: Start difference. First operand 282 states and 354 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:33:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:51,005 INFO L93 Difference]: Finished difference Result 473 states and 601 transitions. [2022-07-21 09:33:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:33:51,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2022-07-21 09:33:51,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:51,007 INFO L225 Difference]: With dead ends: 473 [2022-07-21 09:33:51,008 INFO L226 Difference]: Without dead ends: 275 [2022-07-21 09:33:51,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:33:51,009 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 12 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:51,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1282 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:33:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-21 09:33:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2022-07-21 09:33:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 198 states have (on average 1.121212121212121) internal successors, (222), 203 states have internal predecessors, (222), 46 states have call successors, (46), 22 states have call predecessors, (46), 25 states have return successors, (68), 44 states have call predecessors, (68), 45 states have call successors, (68) [2022-07-21 09:33:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 336 transitions. [2022-07-21 09:33:51,023 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 336 transitions. Word has length 134 [2022-07-21 09:33:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:51,024 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 336 transitions. [2022-07-21 09:33:51,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:33:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 336 transitions. [2022-07-21 09:33:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-21 09:33:51,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:51,025 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:33:51,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:33:51,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 09:33:51,246 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:51,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:51,246 INFO L85 PathProgramCache]: Analyzing trace with hash -549959673, now seen corresponding path program 1 times [2022-07-21 09:33:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:51,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962342612] [2022-07-21 09:33:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:51,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:33:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:33:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:33:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:33:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 09:33:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:33:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 09:33:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:51,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 09:33:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-21 09:33:52,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:52,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962342612] [2022-07-21 09:33:52,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962342612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:33:52,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:33:52,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-21 09:33:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340794490] [2022-07-21 09:33:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:33:52,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 09:33:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:33:52,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 09:33:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:33:52,014 INFO L87 Difference]: Start difference. First operand 270 states and 336 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 19 states have internal predecessors, (70), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-21 09:33:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:54,251 INFO L93 Difference]: Finished difference Result 513 states and 682 transitions. [2022-07-21 09:33:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:33:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 19 states have internal predecessors, (70), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 137 [2022-07-21 09:33:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:54,254 INFO L225 Difference]: With dead ends: 513 [2022-07-21 09:33:54,254 INFO L226 Difference]: Without dead ends: 327 [2022-07-21 09:33:54,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 09:33:54,256 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 165 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:54,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 884 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 09:33:54,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-21 09:33:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 295. [2022-07-21 09:33:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 211 states have (on average 1.132701421800948) internal successors, (239), 216 states have internal predecessors, (239), 57 states have call successors, (57), 23 states have call predecessors, (57), 26 states have return successors, (83), 55 states have call predecessors, (83), 56 states have call successors, (83) [2022-07-21 09:33:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 379 transitions. [2022-07-21 09:33:54,275 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 379 transitions. Word has length 137 [2022-07-21 09:33:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:54,275 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 379 transitions. [2022-07-21 09:33:54,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 19 states have internal predecessors, (70), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-21 09:33:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 379 transitions. [2022-07-21 09:33:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-21 09:33:54,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:54,278 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:33:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 09:33:54,278 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:54,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1094566079, now seen corresponding path program 3 times [2022-07-21 09:33:54,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:54,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844965896] [2022-07-21 09:33:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:54,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:33:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:33:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:33:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:33:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:33:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:33:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 09:33:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-21 09:33:55,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:55,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844965896] [2022-07-21 09:33:55,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844965896] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:55,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510117326] [2022-07-21 09:33:55,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:33:55,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:55,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:33:55,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:33:55,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:33:55,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-21 09:33:55,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:33:55,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-21 09:33:55,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:33:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-21 09:33:56,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:33:56,667 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-21 09:33:56,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-21 09:33:56,673 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-21 09:33:56,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-21 09:33:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 09:33:56,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510117326] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:33:56,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:33:56,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 33 [2022-07-21 09:33:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710327719] [2022-07-21 09:33:56,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:33:56,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-21 09:33:56,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:33:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-21 09:33:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 09:33:56,716 INFO L87 Difference]: Start difference. First operand 295 states and 379 transitions. Second operand has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 10 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2022-07-21 09:33:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:33:58,876 INFO L93 Difference]: Finished difference Result 503 states and 639 transitions. [2022-07-21 09:33:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 09:33:58,877 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 10 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) Word has length 136 [2022-07-21 09:33:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:33:58,879 INFO L225 Difference]: With dead ends: 503 [2022-07-21 09:33:58,879 INFO L226 Difference]: Without dead ends: 356 [2022-07-21 09:33:58,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 284 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=2041, Unknown=0, NotChecked=0, Total=2352 [2022-07-21 09:33:58,882 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 352 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:33:58,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 846 Invalid, 3238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2703 Invalid, 0 Unknown, 409 Unchecked, 1.7s Time] [2022-07-21 09:33:58,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-21 09:33:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 331. [2022-07-21 09:33:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 245 states have (on average 1.1306122448979592) internal successors, (277), 252 states have internal predecessors, (277), 56 states have call successors, (56), 24 states have call predecessors, (56), 29 states have return successors, (80), 54 states have call predecessors, (80), 55 states have call successors, (80) [2022-07-21 09:33:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 413 transitions. [2022-07-21 09:33:58,903 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 413 transitions. Word has length 136 [2022-07-21 09:33:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:33:58,903 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 413 transitions. [2022-07-21 09:33:58,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 10 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2022-07-21 09:33:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 413 transitions. [2022-07-21 09:33:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 09:33:58,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:33:58,906 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2022-07-21 09:33:58,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-21 09:33:59,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:59,140 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:33:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:33:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1774102651, now seen corresponding path program 1 times [2022-07-21 09:33:59,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:33:59,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528780813] [2022-07-21 09:33:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:59,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:33:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:33:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:33:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:33:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:33:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:33:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:33:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:33:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:33:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:33:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:33:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 09:33:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 09:33:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 09:33:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-21 09:33:59,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:33:59,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528780813] [2022-07-21 09:33:59,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528780813] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:33:59,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073422093] [2022-07-21 09:33:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:33:59,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:33:59,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:33:59,480 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:33:59,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:33:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:33:59,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 09:33:59,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:33:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-21 09:33:59,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:33:59,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073422093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:33:59,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:33:59,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-21 09:33:59,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303480681] [2022-07-21 09:33:59,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:33:59,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:33:59,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:33:59,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:33:59,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:33:59,980 INFO L87 Difference]: Start difference. First operand 331 states and 413 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:34:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:00,103 INFO L93 Difference]: Finished difference Result 509 states and 637 transitions. [2022-07-21 09:34:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:34:00,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 140 [2022-07-21 09:34:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:00,105 INFO L225 Difference]: With dead ends: 509 [2022-07-21 09:34:00,105 INFO L226 Difference]: Without dead ends: 277 [2022-07-21 09:34:00,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:34:00,106 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:00,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1276 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:34:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-21 09:34:00,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 267. [2022-07-21 09:34:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 195 states have (on average 1.123076923076923) internal successors, (219), 202 states have internal predecessors, (219), 47 states have call successors, (47), 19 states have call predecessors, (47), 24 states have return successors, (60), 45 states have call predecessors, (60), 46 states have call successors, (60) [2022-07-21 09:34:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 326 transitions. [2022-07-21 09:34:00,133 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 326 transitions. Word has length 140 [2022-07-21 09:34:00,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:00,134 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 326 transitions. [2022-07-21 09:34:00,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 09:34:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 326 transitions. [2022-07-21 09:34:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 09:34:00,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:00,136 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:00,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:34:00,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:00,355 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:00,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1679989516, now seen corresponding path program 1 times [2022-07-21 09:34:00,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:00,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042995588] [2022-07-21 09:34:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:00,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:34:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:34:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:34:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:34:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:34:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:34:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:34:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:34:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 09:34:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:34:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-21 09:34:00,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042995588] [2022-07-21 09:34:00,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042995588] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11235005] [2022-07-21 09:34:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:00,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:00,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:34:00,779 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:34:00,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:34:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:01,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-21 09:34:01,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:34:01,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:34:01,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 09:34:01,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:34:01,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-21 09:34:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 102 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 09:34:02,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:34:03,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11235005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:03,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:34:03,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 26 [2022-07-21 09:34:03,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38013802] [2022-07-21 09:34:03,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:34:03,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:34:03,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:03,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:34:03,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=957, Unknown=1, NotChecked=0, Total=1056 [2022-07-21 09:34:03,400 INFO L87 Difference]: Start difference. First operand 267 states and 326 transitions. Second operand has 26 states, 22 states have (on average 6.454545454545454) internal successors, (142), 23 states have internal predecessors, (142), 12 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (27), 8 states have call predecessors, (27), 11 states have call successors, (27) [2022-07-21 09:34:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:05,231 INFO L93 Difference]: Finished difference Result 604 states and 741 transitions. [2022-07-21 09:34:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 09:34:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 6.454545454545454) internal successors, (142), 23 states have internal predecessors, (142), 12 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (27), 8 states have call predecessors, (27), 11 states have call successors, (27) Word has length 142 [2022-07-21 09:34:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:05,235 INFO L225 Difference]: With dead ends: 604 [2022-07-21 09:34:05,235 INFO L226 Difference]: Without dead ends: 426 [2022-07-21 09:34:05,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=421, Invalid=3738, Unknown=1, NotChecked=0, Total=4160 [2022-07-21 09:34:05,238 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 156 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 811 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:05,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1065 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1834 Invalid, 0 Unknown, 811 Unchecked, 1.1s Time] [2022-07-21 09:34:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-21 09:34:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 377. [2022-07-21 09:34:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 292 states have (on average 1.1267123287671232) internal successors, (329), 301 states have internal predecessors, (329), 53 states have call successors, (53), 24 states have call predecessors, (53), 31 states have return successors, (76), 51 states have call predecessors, (76), 52 states have call successors, (76) [2022-07-21 09:34:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 458 transitions. [2022-07-21 09:34:05,259 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 458 transitions. Word has length 142 [2022-07-21 09:34:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:05,259 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 458 transitions. [2022-07-21 09:34:05,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 6.454545454545454) internal successors, (142), 23 states have internal predecessors, (142), 12 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (27), 8 states have call predecessors, (27), 11 states have call successors, (27) [2022-07-21 09:34:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 458 transitions. [2022-07-21 09:34:05,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 09:34:05,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:05,261 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:05,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:34:05,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-21 09:34:05,487 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash -181271120, now seen corresponding path program 2 times [2022-07-21 09:34:05,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:05,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096135214] [2022-07-21 09:34:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:05,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:34:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:34:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:34:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:34:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:34:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:34:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:34:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:34:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 09:34:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:34:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-21 09:34:06,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:06,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096135214] [2022-07-21 09:34:06,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096135214] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:06,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374147185] [2022-07-21 09:34:06,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:34:06,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:06,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:34:06,580 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:34:06,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:34:07,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:34:07,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:34:07,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-21 09:34:07,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:34:07,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:34:09,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:34:09,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-21 09:34:16,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:34:16,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-21 09:34:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 64 proven. 45 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-21 09:34:24,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:34:27,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374147185] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:27,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:34:27,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 33 [2022-07-21 09:34:27,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109441205] [2022-07-21 09:34:27,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:34:27,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-21 09:34:27,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-21 09:34:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1432, Unknown=2, NotChecked=0, Total=1560 [2022-07-21 09:34:27,072 INFO L87 Difference]: Start difference. First operand 377 states and 458 transitions. Second operand has 33 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 16 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 12 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-21 09:34:29,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:29,982 INFO L93 Difference]: Finished difference Result 613 states and 744 transitions. [2022-07-21 09:34:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 09:34:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 16 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 12 states have call predecessors, (28), 13 states have call successors, (28) Word has length 142 [2022-07-21 09:34:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:29,985 INFO L225 Difference]: With dead ends: 613 [2022-07-21 09:34:29,985 INFO L226 Difference]: Without dead ends: 460 [2022-07-21 09:34:29,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 207 SyntacticMatches, 15 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=526, Invalid=4874, Unknown=2, NotChecked=0, Total=5402 [2022-07-21 09:34:29,988 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 325 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 4190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 769 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:29,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1761 Invalid, 4190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 3236 Invalid, 0 Unknown, 769 Unchecked, 1.8s Time] [2022-07-21 09:34:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-21 09:34:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 389. [2022-07-21 09:34:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 297 states have (on average 1.1111111111111112) internal successors, (330), 305 states have internal predecessors, (330), 55 states have call successors, (55), 29 states have call predecessors, (55), 36 states have return successors, (74), 54 states have call predecessors, (74), 54 states have call successors, (74) [2022-07-21 09:34:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 459 transitions. [2022-07-21 09:34:30,012 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 459 transitions. Word has length 142 [2022-07-21 09:34:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:30,012 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 459 transitions. [2022-07-21 09:34:30,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 16 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 12 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-21 09:34:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 459 transitions. [2022-07-21 09:34:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 09:34:30,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:30,014 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:30,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 09:34:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:30,235 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash 987319158, now seen corresponding path program 1 times [2022-07-21 09:34:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:30,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263433195] [2022-07-21 09:34:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:34:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:34:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:34:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:34:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:34:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:34:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:34:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:34:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 09:34:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:34:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-21 09:34:30,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:30,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263433195] [2022-07-21 09:34:30,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263433195] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:30,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892068765] [2022-07-21 09:34:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:30,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:30,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:34:30,666 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:34:30,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 09:34:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:31,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-21 09:34:31,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:34:31,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:34:31,324 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 09:34:31,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 09:34:31,693 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-21 09:34:31,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 30 [2022-07-21 09:34:31,738 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:34:31,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:34:31,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:34:31,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:34:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 48 proven. 77 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 09:34:32,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:34:33,317 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2078 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base| v_ArrVal_2078) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base|))) (let ((.cse0 (mod (select .cse1 (+ |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset| 16)) 18446744073709551616))) (or (not (< .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset|) 18446744073709551616))) (= 0 .cse0))))) is different from false [2022-07-21 09:34:33,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892068765] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:33,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:34:33,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22] total 33 [2022-07-21 09:34:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491148758] [2022-07-21 09:34:33,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:34:33,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-21 09:34:33,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:33,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-21 09:34:33,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1556, Unknown=1, NotChecked=80, Total=1806 [2022-07-21 09:34:33,340 INFO L87 Difference]: Start difference. First operand 389 states and 459 transitions. Second operand has 33 states, 32 states have (on average 4.90625) internal successors, (157), 31 states have internal predecessors, (157), 10 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-21 09:34:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:34,953 INFO L93 Difference]: Finished difference Result 628 states and 743 transitions. [2022-07-21 09:34:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-21 09:34:34,953 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.90625) internal successors, (157), 31 states have internal predecessors, (157), 10 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 8 states have call successors, (28) Word has length 142 [2022-07-21 09:34:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:34,955 INFO L225 Difference]: With dead ends: 628 [2022-07-21 09:34:34,956 INFO L226 Difference]: Without dead ends: 522 [2022-07-21 09:34:34,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 182 SyntacticMatches, 21 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=416, Invalid=4143, Unknown=1, NotChecked=132, Total=4692 [2022-07-21 09:34:34,958 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 240 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 790 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:34,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 835 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1089 Invalid, 0 Unknown, 790 Unchecked, 0.9s Time] [2022-07-21 09:34:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-07-21 09:34:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 503. [2022-07-21 09:34:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 390 states have (on average 1.094871794871795) internal successors, (427), 399 states have internal predecessors, (427), 67 states have call successors, (67), 39 states have call predecessors, (67), 45 states have return successors, (90), 64 states have call predecessors, (90), 66 states have call successors, (90) [2022-07-21 09:34:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 584 transitions. [2022-07-21 09:34:34,987 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 584 transitions. Word has length 142 [2022-07-21 09:34:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:34,988 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 584 transitions. [2022-07-21 09:34:34,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.90625) internal successors, (157), 31 states have internal predecessors, (157), 10 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-21 09:34:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 584 transitions. [2022-07-21 09:34:34,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 09:34:34,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:34,990 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-21 09:34:35,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 09:34:35,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:35,215 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2031144824, now seen corresponding path program 1 times [2022-07-21 09:34:35,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:35,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847443901] [2022-07-21 09:34:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:34:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:34:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:34:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:34:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:34:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:34:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:34:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:34:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 09:34:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:34:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 18 proven. 51 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-21 09:34:35,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:35,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847443901] [2022-07-21 09:34:35,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847443901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:35,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991237545] [2022-07-21 09:34:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:35,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:35,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:34:35,940 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:34:35,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 09:34:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:36,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-21 09:34:36,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:34:36,679 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:34:36,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-21 09:34:36,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-21 09:34:36,763 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-21 09:34:36,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2022-07-21 09:34:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 80 proven. 48 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:34:43,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:34:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 09:34:44,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991237545] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:34:44,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:34:44,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 13] total 50 [2022-07-21 09:34:44,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223032228] [2022-07-21 09:34:44,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:34:44,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-21 09:34:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-21 09:34:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2257, Unknown=1, NotChecked=0, Total=2450 [2022-07-21 09:34:44,811 INFO L87 Difference]: Start difference. First operand 503 states and 584 transitions. Second operand has 50 states, 46 states have (on average 3.891304347826087) internal successors, (179), 47 states have internal predecessors, (179), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2022-07-21 09:34:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:52,337 INFO L93 Difference]: Finished difference Result 853 states and 1037 transitions. [2022-07-21 09:34:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-21 09:34:52,338 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 46 states have (on average 3.891304347826087) internal successors, (179), 47 states have internal predecessors, (179), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) Word has length 142 [2022-07-21 09:34:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:52,340 INFO L225 Difference]: With dead ends: 853 [2022-07-21 09:34:52,340 INFO L226 Difference]: Without dead ends: 560 [2022-07-21 09:34:52,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 292 SyntacticMatches, 12 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1068, Invalid=9643, Unknown=1, NotChecked=0, Total=10712 [2022-07-21 09:34:52,343 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 501 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 6901 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 8542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 6901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1212 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:52,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1935 Invalid, 8542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 6901 Invalid, 0 Unknown, 1212 Unchecked, 4.6s Time] [2022-07-21 09:34:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-21 09:34:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 467. [2022-07-21 09:34:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 358 states have (on average 1.0642458100558658) internal successors, (381), 363 states have internal predecessors, (381), 66 states have call successors, (66), 39 states have call predecessors, (66), 42 states have return successors, (78), 64 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-21 09:34:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 525 transitions. [2022-07-21 09:34:52,375 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 525 transitions. Word has length 142 [2022-07-21 09:34:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:52,375 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 525 transitions. [2022-07-21 09:34:52,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 46 states have (on average 3.891304347826087) internal successors, (179), 47 states have internal predecessors, (179), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2022-07-21 09:34:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 525 transitions. [2022-07-21 09:34:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:34:52,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:52,377 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:52,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-21 09:34:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:52,591 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:52,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1185688539, now seen corresponding path program 1 times [2022-07-21 09:34:52,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:52,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056629595] [2022-07-21 09:34:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:52,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:34:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:34:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:34:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:34:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:34:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:34:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:34:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:34:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 09:34:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:34:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 09:34:52,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:52,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056629595] [2022-07-21 09:34:52,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056629595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:34:52,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:34:52,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 09:34:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489048185] [2022-07-21 09:34:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:34:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:34:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:34:52,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:34:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:34:52,879 INFO L87 Difference]: Start difference. First operand 467 states and 525 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 09:34:53,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:34:53,424 INFO L93 Difference]: Finished difference Result 487 states and 548 transitions. [2022-07-21 09:34:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:34:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2022-07-21 09:34:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:34:53,427 INFO L225 Difference]: With dead ends: 487 [2022-07-21 09:34:53,427 INFO L226 Difference]: Without dead ends: 485 [2022-07-21 09:34:53,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:34:53,428 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 95 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:34:53,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 726 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:34:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-07-21 09:34:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2022-07-21 09:34:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 366 states have (on average 1.0628415300546448) internal successors, (389), 372 states have internal predecessors, (389), 68 states have call successors, (68), 40 states have call predecessors, (68), 44 states have return successors, (81), 66 states have call predecessors, (81), 67 states have call successors, (81) [2022-07-21 09:34:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 538 transitions. [2022-07-21 09:34:53,458 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 538 transitions. Word has length 144 [2022-07-21 09:34:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:34:53,459 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 538 transitions. [2022-07-21 09:34:53,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 09:34:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 538 transitions. [2022-07-21 09:34:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:34:53,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:34:53,460 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:34:53,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 09:34:53,461 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:34:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:34:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1886753117, now seen corresponding path program 1 times [2022-07-21 09:34:53,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:34:53,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900922209] [2022-07-21 09:34:53,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:53,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:34:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:53,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:34:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:34:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:53,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:34:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:34:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:34:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:34:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:34:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:34:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:34:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:34:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:34:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 09:34:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 09:34:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 34 proven. 39 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-21 09:34:54,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:34:54,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900922209] [2022-07-21 09:34:54,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900922209] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:34:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943523625] [2022-07-21 09:34:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:34:54,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:34:54,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:34:54,156 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:34:54,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 09:34:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:34:54,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2773 conjuncts, 105 conjunts are in the unsatisfiable core [2022-07-21 09:34:54,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:34:54,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:34:59,156 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:34:59,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-21 09:34:59,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-21 09:34:59,228 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:34:59,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-21 09:34:59,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 09:35:00,301 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 09:35:00,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 29 [2022-07-21 09:35:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 09:35:00,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:35:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 09:35:01,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943523625] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:35:01,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:35:01,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 32, 16] total 63 [2022-07-21 09:35:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616812311] [2022-07-21 09:35:01,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:35:01,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-21 09:35:01,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:01,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-21 09:35:01,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3693, Unknown=1, NotChecked=0, Total=3906 [2022-07-21 09:35:01,585 INFO L87 Difference]: Start difference. First operand 479 states and 538 transitions. Second operand has 63 states, 58 states have (on average 3.293103448275862) internal successors, (191), 56 states have internal predecessors, (191), 19 states have call successors, (45), 8 states have call predecessors, (45), 11 states have return successors, (39), 17 states have call predecessors, (39), 15 states have call successors, (39) [2022-07-21 09:35:10,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:10,274 INFO L93 Difference]: Finished difference Result 622 states and 728 transitions. [2022-07-21 09:35:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-07-21 09:35:10,275 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 58 states have (on average 3.293103448275862) internal successors, (191), 56 states have internal predecessors, (191), 19 states have call successors, (45), 8 states have call predecessors, (45), 11 states have return successors, (39), 17 states have call predecessors, (39), 15 states have call successors, (39) Word has length 144 [2022-07-21 09:35:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:10,277 INFO L225 Difference]: With dead ends: 622 [2022-07-21 09:35:10,277 INFO L226 Difference]: Without dead ends: 539 [2022-07-21 09:35:10,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 288 SyntacticMatches, 13 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5312 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1140, Invalid=16414, Unknown=2, NotChecked=0, Total=17556 [2022-07-21 09:35:10,282 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 485 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 6506 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 8535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 6506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1606 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:10,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 2543 Invalid, 8535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 6506 Invalid, 0 Unknown, 1606 Unchecked, 3.5s Time] [2022-07-21 09:35:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-07-21 09:35:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 481. [2022-07-21 09:35:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 366 states have (on average 1.0601092896174864) internal successors, (388), 371 states have internal predecessors, (388), 70 states have call successors, (70), 41 states have call predecessors, (70), 44 states have return successors, (84), 68 states have call predecessors, (84), 69 states have call successors, (84) [2022-07-21 09:35:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 542 transitions. [2022-07-21 09:35:10,317 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 542 transitions. Word has length 144 [2022-07-21 09:35:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:10,317 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 542 transitions. [2022-07-21 09:35:10,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 58 states have (on average 3.293103448275862) internal successors, (191), 56 states have internal predecessors, (191), 19 states have call successors, (45), 8 states have call predecessors, (45), 11 states have return successors, (39), 17 states have call predecessors, (39), 15 states have call successors, (39) [2022-07-21 09:35:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 542 transitions. [2022-07-21 09:35:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 09:35:10,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:10,319 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:10,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-21 09:35:10,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 09:35:10,544 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:10,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:10,545 INFO L85 PathProgramCache]: Analyzing trace with hash -687982950, now seen corresponding path program 1 times [2022-07-21 09:35:10,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:10,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923275231] [2022-07-21 09:35:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:10,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:10,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:10,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:35:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:35:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:35:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:35:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:35:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:35:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:35:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:35:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-21 09:35:11,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:11,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923275231] [2022-07-21 09:35:11,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923275231] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:11,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771916745] [2022-07-21 09:35:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:11,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:11,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:35:11,176 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:35:11,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 09:35:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:11,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 124 conjunts are in the unsatisfiable core [2022-07-21 09:35:11,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:35:13,886 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:35:13,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-21 09:35:13,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-21 09:35:13,947 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:35:13,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-21 09:35:13,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:35:14,519 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:35:14,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-21 09:35:14,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-07-21 09:35:15,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-21 09:35:20,204 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:35:20,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2022-07-21 09:35:20,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2022-07-21 09:35:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 80 proven. 60 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-21 09:35:20,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:35:21,799 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-21 09:35:21,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-21 09:35:21,805 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-21 09:35:21,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-21 09:35:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-21 09:35:22,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771916745] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:35:22,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:35:22,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 42, 22] total 78 [2022-07-21 09:35:22,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756441637] [2022-07-21 09:35:22,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:35:22,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-07-21 09:35:22,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:22,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-07-21 09:35:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=5744, Unknown=2, NotChecked=0, Total=6006 [2022-07-21 09:35:22,105 INFO L87 Difference]: Start difference. First operand 481 states and 542 transitions. Second operand has 78 states, 69 states have (on average 3.0144927536231885) internal successors, (208), 68 states have internal predecessors, (208), 24 states have call successors, (50), 10 states have call predecessors, (50), 15 states have return successors, (43), 20 states have call predecessors, (43), 21 states have call successors, (43) [2022-07-21 09:35:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:30,785 INFO L93 Difference]: Finished difference Result 759 states and 891 transitions. [2022-07-21 09:35:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-07-21 09:35:30,786 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 69 states have (on average 3.0144927536231885) internal successors, (208), 68 states have internal predecessors, (208), 24 states have call successors, (50), 10 states have call predecessors, (50), 15 states have return successors, (43), 20 states have call predecessors, (43), 21 states have call successors, (43) Word has length 151 [2022-07-21 09:35:30,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:30,788 INFO L225 Difference]: With dead ends: 759 [2022-07-21 09:35:30,788 INFO L226 Difference]: Without dead ends: 620 [2022-07-21 09:35:30,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 287 SyntacticMatches, 7 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7199 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=1506, Invalid=23614, Unknown=2, NotChecked=0, Total=25122 [2022-07-21 09:35:30,791 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 363 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 8623 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 11589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 8623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2589 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:30,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 2941 Invalid, 11589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 8623 Invalid, 0 Unknown, 2589 Unchecked, 4.6s Time] [2022-07-21 09:35:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-07-21 09:35:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 537. [2022-07-21 09:35:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 406 states have (on average 1.0566502463054188) internal successors, (429), 411 states have internal predecessors, (429), 79 states have call successors, (79), 48 states have call predecessors, (79), 51 states have return successors, (94), 77 states have call predecessors, (94), 78 states have call successors, (94) [2022-07-21 09:35:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 602 transitions. [2022-07-21 09:35:30,832 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 602 transitions. Word has length 151 [2022-07-21 09:35:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:30,833 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 602 transitions. [2022-07-21 09:35:30,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 69 states have (on average 3.0144927536231885) internal successors, (208), 68 states have internal predecessors, (208), 24 states have call successors, (50), 10 states have call predecessors, (50), 15 states have return successors, (43), 20 states have call predecessors, (43), 21 states have call successors, (43) [2022-07-21 09:35:30,833 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 602 transitions. [2022-07-21 09:35:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 09:35:30,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:30,835 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:30,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 09:35:31,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 09:35:31,051 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash 201357244, now seen corresponding path program 1 times [2022-07-21 09:35:31,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:31,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557351156] [2022-07-21 09:35:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:31,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:35:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:35:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:35:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:35:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:35:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:35:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:35:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:35:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-21 09:35:31,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:31,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557351156] [2022-07-21 09:35:31,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557351156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:31,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:35:31,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:35:31,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493427433] [2022-07-21 09:35:31,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:31,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:35:31,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:35:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:35:31,285 INFO L87 Difference]: Start difference. First operand 537 states and 602 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 09:35:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:31,770 INFO L93 Difference]: Finished difference Result 620 states and 706 transitions. [2022-07-21 09:35:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:35:31,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 155 [2022-07-21 09:35:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:31,772 INFO L225 Difference]: With dead ends: 620 [2022-07-21 09:35:31,773 INFO L226 Difference]: Without dead ends: 569 [2022-07-21 09:35:31,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:35:31,773 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 142 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:31,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 399 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:35:31,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-07-21 09:35:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 544. [2022-07-21 09:35:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 411 states have (on average 1.0559610705596107) internal successors, (434), 417 states have internal predecessors, (434), 79 states have call successors, (79), 48 states have call predecessors, (79), 53 states have return successors, (96), 78 states have call predecessors, (96), 78 states have call successors, (96) [2022-07-21 09:35:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 609 transitions. [2022-07-21 09:35:31,816 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 609 transitions. Word has length 155 [2022-07-21 09:35:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:31,816 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 609 transitions. [2022-07-21 09:35:31,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 09:35:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 609 transitions. [2022-07-21 09:35:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 09:35:31,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:31,819 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:31,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 09:35:31,819 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:31,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2095970207, now seen corresponding path program 1 times [2022-07-21 09:35:31,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:31,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662516434] [2022-07-21 09:35:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:31,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:35:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:35:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:35:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:35:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:35:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:35:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:35:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:35:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-21 09:35:32,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:32,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662516434] [2022-07-21 09:35:32,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662516434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:32,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:35:32,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:35:32,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137982447] [2022-07-21 09:35:32,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:32,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:35:32,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:35:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:35:32,105 INFO L87 Difference]: Start difference. First operand 544 states and 609 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 09:35:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:32,652 INFO L93 Difference]: Finished difference Result 562 states and 632 transitions. [2022-07-21 09:35:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:35:32,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 156 [2022-07-21 09:35:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:32,654 INFO L225 Difference]: With dead ends: 562 [2022-07-21 09:35:32,654 INFO L226 Difference]: Without dead ends: 560 [2022-07-21 09:35:32,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:35:32,655 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 190 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:32,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 296 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:35:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-21 09:35:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 548. [2022-07-21 09:35:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 414 states have (on average 1.0555555555555556) internal successors, (437), 420 states have internal predecessors, (437), 79 states have call successors, (79), 49 states have call predecessors, (79), 54 states have return successors, (96), 78 states have call predecessors, (96), 78 states have call successors, (96) [2022-07-21 09:35:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 612 transitions. [2022-07-21 09:35:32,699 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 612 transitions. Word has length 156 [2022-07-21 09:35:32,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:32,700 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 612 transitions. [2022-07-21 09:35:32,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 09:35:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 612 transitions. [2022-07-21 09:35:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 09:35:32,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:32,702 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:32,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 09:35:32,702 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:32,703 INFO L85 PathProgramCache]: Analyzing trace with hash -112341763, now seen corresponding path program 1 times [2022-07-21 09:35:32,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:32,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278299784] [2022-07-21 09:35:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:35:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:35:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:35:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:35:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:35:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:35:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:35:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:35:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 09:35:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 22 proven. 48 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 09:35:33,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:33,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278299784] [2022-07-21 09:35:33,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278299784] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:33,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815286106] [2022-07-21 09:35:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:33,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:33,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:35:33,654 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:35:33,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 09:35:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:34,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2829 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-21 09:35:34,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:35:34,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:35:35,156 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:35:35,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 09:35:35,564 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-21 09:35:35,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 30 [2022-07-21 09:35:35,637 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-07-21 09:35:35,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 39 [2022-07-21 09:35:35,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-07-21 09:35:35,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-21 09:35:35,699 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-21 09:35:35,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:35:35,811 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 09:35:35,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2022-07-21 09:35:36,698 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 09:35:36,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21 [2022-07-21 09:35:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 61 proven. 99 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 09:35:36,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:35:37,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815286106] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:37,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:35:37,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 30] total 44 [2022-07-21 09:35:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756570061] [2022-07-21 09:35:37,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:35:37,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-21 09:35:37,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-21 09:35:37,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2288, Unknown=0, NotChecked=0, Total=2450 [2022-07-21 09:35:37,618 INFO L87 Difference]: Start difference. First operand 548 states and 612 transitions. Second operand has 44 states, 39 states have (on average 4.0) internal successors, (156), 37 states have internal predecessors, (156), 14 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2022-07-21 09:35:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:41,790 INFO L93 Difference]: Finished difference Result 652 states and 744 transitions. [2022-07-21 09:35:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-21 09:35:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 4.0) internal successors, (156), 37 states have internal predecessors, (156), 14 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) Word has length 162 [2022-07-21 09:35:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:41,792 INFO L225 Difference]: With dead ends: 652 [2022-07-21 09:35:41,792 INFO L226 Difference]: Without dead ends: 639 [2022-07-21 09:35:41,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 181 SyntacticMatches, 25 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=636, Invalid=7553, Unknown=1, NotChecked=0, Total=8190 [2022-07-21 09:35:41,794 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 469 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 5836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1723 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:41,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1396 Invalid, 5836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3757 Invalid, 0 Unknown, 1723 Unchecked, 2.3s Time] [2022-07-21 09:35:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-21 09:35:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 605. [2022-07-21 09:35:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 460 states have (on average 1.065217391304348) internal successors, (490), 466 states have internal predecessors, (490), 87 states have call successors, (87), 52 states have call predecessors, (87), 57 states have return successors, (105), 86 states have call predecessors, (105), 86 states have call successors, (105) [2022-07-21 09:35:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 682 transitions. [2022-07-21 09:35:41,847 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 682 transitions. Word has length 162 [2022-07-21 09:35:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:41,847 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 682 transitions. [2022-07-21 09:35:41,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 4.0) internal successors, (156), 37 states have internal predecessors, (156), 14 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (32), 12 states have call predecessors, (32), 12 states have call successors, (32) [2022-07-21 09:35:41,847 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 682 transitions. [2022-07-21 09:35:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-21 09:35:41,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:41,849 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:41,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-21 09:35:42,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:42,063 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:42,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1581626464, now seen corresponding path program 1 times [2022-07-21 09:35:42,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:42,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688740932] [2022-07-21 09:35:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:42,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:35:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:35:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:35:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:35:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:35:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:35:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:35:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:35:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:35:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:35:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 09:35:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-21 09:35:42,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:42,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688740932] [2022-07-21 09:35:42,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688740932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:42,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:35:42,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:35:42,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343382042] [2022-07-21 09:35:42,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:42,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:35:42,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:35:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:35:42,307 INFO L87 Difference]: Start difference. First operand 605 states and 682 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 09:35:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:42,629 INFO L93 Difference]: Finished difference Result 719 states and 822 transitions. [2022-07-21 09:35:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:35:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2022-07-21 09:35:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:42,631 INFO L225 Difference]: With dead ends: 719 [2022-07-21 09:35:42,631 INFO L226 Difference]: Without dead ends: 616 [2022-07-21 09:35:42,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:35:42,632 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 131 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:42,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 248 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:35:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-07-21 09:35:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 606. [2022-07-21 09:35:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 461 states have (on average 1.0650759219088937) internal successors, (491), 467 states have internal predecessors, (491), 87 states have call successors, (87), 52 states have call predecessors, (87), 57 states have return successors, (105), 86 states have call predecessors, (105), 86 states have call successors, (105) [2022-07-21 09:35:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 683 transitions. [2022-07-21 09:35:42,683 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 683 transitions. Word has length 173 [2022-07-21 09:35:42,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:42,684 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 683 transitions. [2022-07-21 09:35:42,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 09:35:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 683 transitions. [2022-07-21 09:35:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-21 09:35:42,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:42,686 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:42,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 09:35:42,686 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1346324033, now seen corresponding path program 1 times [2022-07-21 09:35:42,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:42,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196198872] [2022-07-21 09:35:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:42,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:35:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:35:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:35:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:35:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:35:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:35:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 09:35:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:35:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:35:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 09:35:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 09:35:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:35:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:35:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-21 09:35:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-21 09:35:42,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:42,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196198872] [2022-07-21 09:35:42,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196198872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:42,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:35:42,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:35:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982414181] [2022-07-21 09:35:42,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:35:42,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:35:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:35:42,981 INFO L87 Difference]: Start difference. First operand 606 states and 683 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-21 09:35:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:43,571 INFO L93 Difference]: Finished difference Result 636 states and 721 transitions. [2022-07-21 09:35:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:35:43,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 171 [2022-07-21 09:35:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:43,574 INFO L225 Difference]: With dead ends: 636 [2022-07-21 09:35:43,574 INFO L226 Difference]: Without dead ends: 634 [2022-07-21 09:35:43,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:35:43,575 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 154 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:43,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 522 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:35:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-07-21 09:35:43,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 617. [2022-07-21 09:35:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 467 states have (on average 1.0642398286937902) internal successors, (497), 474 states have internal predecessors, (497), 90 states have call successors, (90), 53 states have call predecessors, (90), 59 states have return successors, (112), 89 states have call predecessors, (112), 89 states have call successors, (112) [2022-07-21 09:35:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 699 transitions. [2022-07-21 09:35:43,628 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 699 transitions. Word has length 171 [2022-07-21 09:35:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:43,629 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 699 transitions. [2022-07-21 09:35:43,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-21 09:35:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 699 transitions. [2022-07-21 09:35:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-21 09:35:43,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:43,631 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:43,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 09:35:43,632 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:43,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1909091545, now seen corresponding path program 1 times [2022-07-21 09:35:43,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:43,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413579384] [2022-07-21 09:35:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:43,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:35:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:35:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:35:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:35:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:35:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:35:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:35:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:35:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 09:35:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 09:35:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-21 09:35:45,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:45,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413579384] [2022-07-21 09:35:45,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413579384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:45,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:35:45,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:35:45,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621410913] [2022-07-21 09:35:45,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:45,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:35:45,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:45,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:35:45,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:35:45,717 INFO L87 Difference]: Start difference. First operand 617 states and 699 transitions. Second operand has 16 states, 14 states have (on average 4.428571428571429) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-07-21 09:35:47,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:47,127 INFO L93 Difference]: Finished difference Result 644 states and 736 transitions. [2022-07-21 09:35:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:35:47,127 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.428571428571429) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 168 [2022-07-21 09:35:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:47,130 INFO L225 Difference]: With dead ends: 644 [2022-07-21 09:35:47,130 INFO L226 Difference]: Without dead ends: 642 [2022-07-21 09:35:47,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-07-21 09:35:47,131 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 258 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:47,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 338 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 09:35:47,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-07-21 09:35:47,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 623. [2022-07-21 09:35:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 471 states have (on average 1.0636942675159236) internal successors, (501), 478 states have internal predecessors, (501), 91 states have call successors, (91), 54 states have call predecessors, (91), 60 states have return successors, (113), 90 states have call predecessors, (113), 90 states have call successors, (113) [2022-07-21 09:35:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 705 transitions. [2022-07-21 09:35:47,190 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 705 transitions. Word has length 168 [2022-07-21 09:35:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:47,191 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 705 transitions. [2022-07-21 09:35:47,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.428571428571429) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-07-21 09:35:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 705 transitions. [2022-07-21 09:35:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-21 09:35:47,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:47,193 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:47,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 09:35:47,193 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:47,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:47,194 INFO L85 PathProgramCache]: Analyzing trace with hash -797255900, now seen corresponding path program 1 times [2022-07-21 09:35:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:47,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145367856] [2022-07-21 09:35:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:35:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:35:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:35:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:35:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:35:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 09:35:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 09:35:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 09:35:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:35:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 09:35:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 09:35:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-21 09:35:47,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:47,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145367856] [2022-07-21 09:35:47,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145367856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:47,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:35:47,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 09:35:47,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446662704] [2022-07-21 09:35:47,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:47,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:35:47,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:35:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:35:47,526 INFO L87 Difference]: Start difference. First operand 623 states and 705 transitions. Second operand has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-21 09:35:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:48,237 INFO L93 Difference]: Finished difference Result 737 states and 856 transitions. [2022-07-21 09:35:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:35:48,238 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 177 [2022-07-21 09:35:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:48,239 INFO L225 Difference]: With dead ends: 737 [2022-07-21 09:35:48,239 INFO L226 Difference]: Without dead ends: 625 [2022-07-21 09:35:48,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:35:48,240 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 163 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:48,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 579 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:35:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-07-21 09:35:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 624. [2022-07-21 09:35:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 472 states have (on average 1.0635593220338984) internal successors, (502), 479 states have internal predecessors, (502), 91 states have call successors, (91), 54 states have call predecessors, (91), 60 states have return successors, (113), 90 states have call predecessors, (113), 90 states have call successors, (113) [2022-07-21 09:35:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 706 transitions. [2022-07-21 09:35:48,296 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 706 transitions. Word has length 177 [2022-07-21 09:35:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:48,297 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 706 transitions. [2022-07-21 09:35:48,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-21 09:35:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 706 transitions. [2022-07-21 09:35:48,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-21 09:35:48,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:48,299 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:35:48,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 09:35:48,299 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:48,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash 978298422, now seen corresponding path program 1 times [2022-07-21 09:35:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:48,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352576525] [2022-07-21 09:35:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:48,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:35:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:35:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:35:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:35:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:35:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:35:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:35:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:35:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:35:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:35:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:35:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:35:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:35:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 09:35:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 20 proven. 32 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-21 09:35:48,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:48,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352576525] [2022-07-21 09:35:48,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352576525] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:48,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734127839] [2022-07-21 09:35:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:48,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:35:48,904 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:35:48,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-21 09:35:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:49,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-21 09:35:49,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:35:49,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:35:49,624 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:35:49,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 09:35:49,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:35:49,924 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:35:49,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-21 09:35:50,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-21 09:35:50,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-21 09:35:50,252 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 09:35:50,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:35:50,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-21 09:36:02,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-21 09:36:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 39 proven. 149 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 09:36:03,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:36:04,137 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3072 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base| v_ArrVal_3072) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-21 09:36:04,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734127839] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:04,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:36:04,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 33] total 46 [2022-07-21 09:36:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187955144] [2022-07-21 09:36:04,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:36:04,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-21 09:36:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:04,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-21 09:36:04,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2558, Unknown=3, NotChecked=102, Total=2862 [2022-07-21 09:36:04,146 INFO L87 Difference]: Start difference. First operand 624 states and 706 transitions. Second operand has 46 states, 42 states have (on average 4.380952380952381) internal successors, (184), 40 states have internal predecessors, (184), 17 states have call successors, (36), 11 states have call predecessors, (36), 14 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) [2022-07-21 09:36:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:08,500 INFO L93 Difference]: Finished difference Result 799 states and 901 transitions. [2022-07-21 09:36:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-21 09:36:08,501 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 4.380952380952381) internal successors, (184), 40 states have internal predecessors, (184), 17 states have call successors, (36), 11 states have call predecessors, (36), 14 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) Word has length 169 [2022-07-21 09:36:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:08,503 INFO L225 Difference]: With dead ends: 799 [2022-07-21 09:36:08,503 INFO L226 Difference]: Without dead ends: 604 [2022-07-21 09:36:08,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 242 SyntacticMatches, 19 SemanticMatches, 89 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2944 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=696, Invalid=7314, Unknown=4, NotChecked=176, Total=8190 [2022-07-21 09:36:08,505 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 232 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 3555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1804 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:08,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 943 Invalid, 3555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1572 Invalid, 0 Unknown, 1804 Unchecked, 0.9s Time] [2022-07-21 09:36:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-21 09:36:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 597. [2022-07-21 09:36:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 457 states have (on average 1.0678336980306347) internal successors, (488), 464 states have internal predecessors, (488), 82 states have call successors, (82), 51 states have call predecessors, (82), 57 states have return successors, (102), 81 states have call predecessors, (102), 81 states have call successors, (102) [2022-07-21 09:36:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 672 transitions. [2022-07-21 09:36:08,562 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 672 transitions. Word has length 169 [2022-07-21 09:36:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:08,562 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 672 transitions. [2022-07-21 09:36:08,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 4.380952380952381) internal successors, (184), 40 states have internal predecessors, (184), 17 states have call successors, (36), 11 states have call predecessors, (36), 14 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) [2022-07-21 09:36:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 672 transitions. [2022-07-21 09:36:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-21 09:36:08,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:08,565 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:36:08,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-21 09:36:08,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:08,775 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash -928104844, now seen corresponding path program 2 times [2022-07-21 09:36:08,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:08,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696198850] [2022-07-21 09:36:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:08,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:36:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:36:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:36:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:36:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:36:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:36:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:36:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:36:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:36:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:36:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 09:36:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:36:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:36:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:36:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 09:36:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-21 09:36:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:09,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696198850] [2022-07-21 09:36:09,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696198850] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:09,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602936818] [2022-07-21 09:36:09,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:36:09,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:09,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:36:09,659 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:36:09,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process