./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 f4b24e32 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-?-f4b24e3 [2022-07-13 22:37:48,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:37:48,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:37:48,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:37:48,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:37:48,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:37:48,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:37:48,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:37:48,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:37:48,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:37:48,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:37:48,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:37:48,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:37:48,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:37:48,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:37:48,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:37:48,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:37:48,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:37:48,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:37:48,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:37:48,771 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:37:48,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:37:48,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:37:48,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:37:48,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:37:48,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:37:48,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:37:48,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:37:48,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:37:48,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:37:48,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:37:48,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:37:48,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:37:48,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:37:48,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:37:48,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:37:48,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:37:48,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:37:48,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:37:48,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:37:48,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:37:48,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:37:48,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:37:48,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:37:48,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:37:48,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:37:48,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:37:48,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:37:48,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:37:48,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:37:48,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:37:48,828 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:37:48,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:37:48,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:37:48,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:37:48,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:37:48,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:37:48,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:37:48,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:37:48,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:37:48,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:37:48,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:37:48,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:37:48,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:37:48,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:37:48,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:37:48,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:37:48,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:37:48,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:37:48,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:37:48,833 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:37:48,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:37:48,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:37:48,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2022-07-13 22:37:49,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:37:49,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:37:49,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:37:49,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:37:49,088 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:37:49,089 INFO L432 ainManager$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 [2022-07-13 22:37:49,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ec1cf04/3bf7c1a35f0d4513a83cfd6ad8cec00f/FLAGe4a63223d [2022-07-13 22:37:49,825 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:37:49,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2022-07-13 22:37:49,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ec1cf04/3bf7c1a35f0d4513a83cfd6ad8cec00f/FLAGe4a63223d [2022-07-13 22:37:49,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ec1cf04/3bf7c1a35f0d4513a83cfd6ad8cec00f [2022-07-13 22:37:49,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:37:49,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:37:49,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:37:49,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:37:49,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:37:49,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:37:49" (1/1) ... [2022-07-13 22:37:49,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6527e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:49, skipping insertion in model container [2022-07-13 22:37:49,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:37:49" (1/1) ... [2022-07-13 22:37:49,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:37:50,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:37:50,248 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] [2022-07-13 22:37:50,253 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] [2022-07-13 22:37:50,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:50,834 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:50,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:50,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:50,840 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:50,866 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:50,868 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:50,871 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:50,871 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:37:51,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:37:51,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:37:51,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:37:51,091 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:37:51,092 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:37:51,092 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:37:51,093 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:37:51,093 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:37:51,094 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:37:51,230 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:37:51,306 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,308 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:37:51,487 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:37:51,501 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] [2022-07-13 22:37:51,501 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] [2022-07-13 22:37:51,539 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,540 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,540 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,540 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,541 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,545 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,546 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,546 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,547 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,570 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:37:51,571 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:37:51,572 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:37:51,572 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:37:51,573 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:37:51,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:37:51,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:37:51,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:37:51,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:37:51,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:37:51,590 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:37:51,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:37:51,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:37:51,878 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:37:51,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51 WrapperNode [2022-07-13 22:37:51,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:37:51,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:37:51,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:37:51,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:37:51,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:51,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,028 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2022-07-13 22:37:52,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:37:52,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:37:52,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:37:52,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:37:52,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:37:52,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:37:52,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:37:52,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:37:52,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (1/1) ... [2022-07-13 22:37:52,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:37:52,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:37:52,169 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) [2022-07-13 22:37:52,200 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 [2022-07-13 22:37:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2022-07-13 22:37:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2022-07-13 22:37:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2022-07-13 22:37:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-13 22:37:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-13 22:37:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:37:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:37:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:37:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:37:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:37:52,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:37:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:37:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:37:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:37:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-13 22:37:52,234 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-13 22:37:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:37:52,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:37:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:37:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:37:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:37:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:37:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:37:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:37:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-13 22:37:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-13 22:37:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:37:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:37:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-13 22:37:52,246 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-13 22:37:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:37:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:37:52,247 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:37:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:37:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2022-07-13 22:37:52,248 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2022-07-13 22:37:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:37:52,523 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:37:52,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:37:53,525 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:37:53,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:37:53,534 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 22:37:53,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:37:53 BoogieIcfgContainer [2022-07-13 22:37:53,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:37:53,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:37:53,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:37:53,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:37:53,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:37:49" (1/3) ... [2022-07-13 22:37:53,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a04c8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:37:53, skipping insertion in model container [2022-07-13 22:37:53,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:37:51" (2/3) ... [2022-07-13 22:37:53,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a04c8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:37:53, skipping insertion in model container [2022-07-13 22:37:53,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:37:53" (3/3) ... [2022-07-13 22:37:53,546 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2022-07-13 22:37:53,559 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:37:53,559 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:37:53,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:37:53,607 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@f787669, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@512b3045 [2022-07-13 22:37:53,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:37:53,611 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) [2022-07-13 22:37:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 22:37:53,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:37:53,622 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] [2022-07-13 22:37:53,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:37:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:37:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash -598164550, now seen corresponding path program 1 times [2022-07-13 22:37:53,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:37:53,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788300253] [2022-07-13 22:37:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:37:53,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:37:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:37:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:37:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:37:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:37:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:37:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:37:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:37:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:37:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:37:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:37:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:37:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:37:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-13 22:37:54,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:37:54,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788300253] [2022-07-13 22:37:54,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788300253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:37:54,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:37:54,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:37:54,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872144273] [2022-07-13 22:37:54,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:37:54,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:37:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:37:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:37:54,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:37:54,435 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) [2022-07-13 22:37:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:37:54,664 INFO L93 Difference]: Finished difference Result 280 states and 391 transitions. [2022-07-13 22:37:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:37:54,666 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 [2022-07-13 22:37:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:37:54,674 INFO L225 Difference]: With dead ends: 280 [2022-07-13 22:37:54,674 INFO L226 Difference]: Without dead ends: 137 [2022-07-13 22:37:54,679 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 [2022-07-13 22:37:54,681 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 63 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-07-13 22:37:54,682 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] [2022-07-13 22:37:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-13 22:37:54,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-07-13 22:37:54,720 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) [2022-07-13 22:37:54,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2022-07-13 22:37:54,723 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 96 [2022-07-13 22:37:54,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:37:54,724 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2022-07-13 22:37:54,724 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) [2022-07-13 22:37:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2022-07-13 22:37:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 22:37:54,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:37:54,728 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] [2022-07-13 22:37:54,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:37:54,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:37:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:37:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1705408322, now seen corresponding path program 1 times [2022-07-13 22:37:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:37:54,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096814827] [2022-07-13 22:37:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:37:54,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:37:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:37:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:37:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:37:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:54,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:37:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:37:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:37:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:37:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:37:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:37:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:37:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:37:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 22:37:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 22:37:55,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:37:55,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096814827] [2022-07-13 22:37:55,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096814827] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:37:55,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137145828] [2022-07-13 22:37:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:37:55,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:37:55,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:37:55,139 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) [2022-07-13 22:37:55,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:37:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:55,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:37:55,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:37:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 22:37:55,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:37:55,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137145828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:37:55,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:37:55,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-13 22:37:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261150479] [2022-07-13 22:37:55,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:37:55,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:37:55,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:37:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:37:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:37:55,880 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) [2022-07-13 22:37:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:37:56,075 INFO L93 Difference]: Finished difference Result 252 states and 333 transitions. [2022-07-13 22:37:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:37:56,076 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 [2022-07-13 22:37:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:37:56,085 INFO L225 Difference]: With dead ends: 252 [2022-07-13 22:37:56,085 INFO L226 Difference]: Without dead ends: 140 [2022-07-13 22:37:56,087 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 [2022-07-13 22:37:56,092 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 [2022-07-13 22:37:56,092 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] [2022-07-13 22:37:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-13 22:37:56,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-07-13 22:37:56,113 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) [2022-07-13 22:37:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2022-07-13 22:37:56,115 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 96 [2022-07-13 22:37:56,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:37:56,117 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2022-07-13 22:37:56,118 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) [2022-07-13 22:37:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2022-07-13 22:37:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 22:37:56,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:37:56,122 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] [2022-07-13 22:37:56,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:37:56,322 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 [2022-07-13 22:37:56,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:37:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:37:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash 870874419, now seen corresponding path program 1 times [2022-07-13 22:37:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:37:56,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456524011] [2022-07-13 22:37:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:37:56,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:37:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:37:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:37:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:37:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:37:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:37:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:37:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:37:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:37:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:37:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:37:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:37:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:37:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 22:37:56,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:37:56,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456524011] [2022-07-13 22:37:56,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456524011] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:37:56,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947749817] [2022-07-13 22:37:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:37:56,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:37:56,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:37:56,751 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) [2022-07-13 22:37:56,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:37:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:57,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:37:57,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:37:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 22:37:57,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:37:57,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947749817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:37:57,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:37:57,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-13 22:37:57,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413222900] [2022-07-13 22:37:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:37:57,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:37:57,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:37:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:37:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:37:57,369 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) [2022-07-13 22:37:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:37:57,551 INFO L93 Difference]: Finished difference Result 247 states and 324 transitions. [2022-07-13 22:37:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:37:57,552 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 [2022-07-13 22:37:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:37:57,553 INFO L225 Difference]: With dead ends: 247 [2022-07-13 22:37:57,553 INFO L226 Difference]: Without dead ends: 140 [2022-07-13 22:37:57,554 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 [2022-07-13 22:37:57,555 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 [2022-07-13 22:37:57,556 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] [2022-07-13 22:37:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-13 22:37:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-07-13 22:37:57,569 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) [2022-07-13 22:37:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2022-07-13 22:37:57,570 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 102 [2022-07-13 22:37:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:37:57,571 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2022-07-13 22:37:57,571 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) [2022-07-13 22:37:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2022-07-13 22:37:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 22:37:57,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:37:57,576 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] [2022-07-13 22:37:57,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 22:37:57,790 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 [2022-07-13 22:37:57,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:37:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:37:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1336541160, now seen corresponding path program 2 times [2022-07-13 22:37:57,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:37:57,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654674172] [2022-07-13 22:37:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:37:57,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:37:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:37:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:37:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:37:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:37:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:37:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:37:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:37:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:37:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:37:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:37:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:37:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:37:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:37:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:37:58,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654674172] [2022-07-13 22:37:58,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654674172] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:37:58,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051566498] [2022-07-13 22:37:58,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:37:58,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:37:58,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:37:58,169 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) [2022-07-13 22:37:58,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:37:58,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:37:58,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:37:58,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 22:37:58,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:37:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:37:59,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:37:59,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051566498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:37:59,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:37:59,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2022-07-13 22:37:59,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170327751] [2022-07-13 22:37:59,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:37:59,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:37:59,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:37:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:37:59,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:37:59,032 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) [2022-07-13 22:37:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:37:59,210 INFO L93 Difference]: Finished difference Result 231 states and 303 transitions. [2022-07-13 22:37:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:37:59,210 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 [2022-07-13 22:37:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:37:59,215 INFO L225 Difference]: With dead ends: 231 [2022-07-13 22:37:59,215 INFO L226 Difference]: Without dead ends: 137 [2022-07-13 22:37:59,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:37:59,219 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 [2022-07-13 22:37:59,221 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] [2022-07-13 22:37:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-13 22:37:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-07-13 22:37:59,243 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) [2022-07-13 22:37:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2022-07-13 22:37:59,245 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 108 [2022-07-13 22:37:59,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:37:59,249 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2022-07-13 22:37:59,249 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) [2022-07-13 22:37:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2022-07-13 22:37:59,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 22:37:59,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:37:59,253 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] [2022-07-13 22:37:59,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 22:37:59,467 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 [2022-07-13 22:37:59,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:37:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:37:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1211043646, now seen corresponding path program 1 times [2022-07-13 22:37:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:37:59,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852624192] [2022-07-13 22:37:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:37:59,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:37:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:37:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:37:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:37:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:37:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:37:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:37:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:37:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:37:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:37:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:37:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:37:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:37:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:37:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:37:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-13 22:37:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:37:59,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852624192] [2022-07-13 22:37:59,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852624192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:37:59,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:37:59,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:37:59,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461911897] [2022-07-13 22:37:59,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:37:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:37:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:37:59,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:37:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:37:59,892 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) [2022-07-13 22:38:00,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:00,464 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2022-07-13 22:38:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:38:00,465 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 [2022-07-13 22:38:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:00,466 INFO L225 Difference]: With dead ends: 149 [2022-07-13 22:38:00,466 INFO L226 Difference]: Without dead ends: 147 [2022-07-13 22:38:00,467 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 [2022-07-13 22:38:00,467 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 [2022-07-13 22:38:00,468 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] [2022-07-13 22:38:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-13 22:38:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2022-07-13 22:38:00,480 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) [2022-07-13 22:38:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2022-07-13 22:38:00,481 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 120 [2022-07-13 22:38:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:00,482 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2022-07-13 22:38:00,482 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) [2022-07-13 22:38:00,482 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2022-07-13 22:38:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:38:00,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:00,484 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] [2022-07-13 22:38:00,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:38:00,484 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:00,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1628651524, now seen corresponding path program 1 times [2022-07-13 22:38:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:00,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047170102] [2022-07-13 22:38:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:00,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:38:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:38:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:38:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:38:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:38:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:38:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:38:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:38:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-13 22:38:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:01,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047170102] [2022-07-13 22:38:01,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047170102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:38:01,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:38:01,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:38:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315438070] [2022-07-13 22:38:01,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:38:01,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:38:01,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:38:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:38:01,032 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) [2022-07-13 22:38:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:01,817 INFO L93 Difference]: Finished difference Result 236 states and 320 transitions. [2022-07-13 22:38:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:38:01,818 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 [2022-07-13 22:38:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:01,820 INFO L225 Difference]: With dead ends: 236 [2022-07-13 22:38:01,820 INFO L226 Difference]: Without dead ends: 170 [2022-07-13 22:38:01,820 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 [2022-07-13 22:38:01,821 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 [2022-07-13 22:38:01,821 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] [2022-07-13 22:38:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-13 22:38:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 164. [2022-07-13 22:38:01,835 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) [2022-07-13 22:38:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 225 transitions. [2022-07-13 22:38:01,837 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 225 transitions. Word has length 124 [2022-07-13 22:38:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:01,838 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 225 transitions. [2022-07-13 22:38:01,838 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) [2022-07-13 22:38:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 225 transitions. [2022-07-13 22:38:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:38:01,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:01,840 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] [2022-07-13 22:38:01,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:38:01,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash 348787846, now seen corresponding path program 1 times [2022-07-13 22:38:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:01,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911189374] [2022-07-13 22:38:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:01,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:38:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:38:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:38:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:38:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:38:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:38:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:38:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:38:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-13 22:38:02,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:02,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911189374] [2022-07-13 22:38:02,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911189374] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:38:02,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216906909] [2022-07-13 22:38:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:02,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:38:02,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:38:02,356 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) [2022-07-13 22:38:02,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:38:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:02,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 22:38:02,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:38:02,972 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 [2022-07-13 22:38:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 22:38:03,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:38:03,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216906909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:38:03,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:38:03,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-13 22:38:03,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577663859] [2022-07-13 22:38:03,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:38:03,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:38:03,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:03,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:38:03,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:38:03,238 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) [2022-07-13 22:38:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:03,358 INFO L93 Difference]: Finished difference Result 320 states and 437 transitions. [2022-07-13 22:38:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:38:03,359 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 [2022-07-13 22:38:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:03,360 INFO L225 Difference]: With dead ends: 320 [2022-07-13 22:38:03,360 INFO L226 Difference]: Without dead ends: 177 [2022-07-13 22:38:03,361 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 [2022-07-13 22:38:03,362 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 [2022-07-13 22:38:03,362 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] [2022-07-13 22:38:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-13 22:38:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-07-13 22:38:03,374 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) [2022-07-13 22:38:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2022-07-13 22:38:03,376 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 239 transitions. Word has length 124 [2022-07-13 22:38:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:03,376 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 239 transitions. [2022-07-13 22:38:03,376 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) [2022-07-13 22:38:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 239 transitions. [2022-07-13 22:38:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:38:03,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:03,378 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] [2022-07-13 22:38:03,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:38:03,603 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 [2022-07-13 22:38:03,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:03,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:03,604 INFO L85 PathProgramCache]: Analyzing trace with hash 320287556, now seen corresponding path program 2 times [2022-07-13 22:38:03,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:03,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76425433] [2022-07-13 22:38:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:03,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:38:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:38:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:38:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:38:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:38:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:38:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:38:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:38:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-13 22:38:03,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:03,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76425433] [2022-07-13 22:38:03,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76425433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:38:03,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856996655] [2022-07-13 22:38:03,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:38:03,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:38:03,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:38:03,827 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) [2022-07-13 22:38:03,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:38:04,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:38:04,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:38:04,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:38:04,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:38:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-13 22:38:04,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:38:04,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856996655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:38:04,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:38:04,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 22:38:04,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387661510] [2022-07-13 22:38:04,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:38:04,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:38:04,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:04,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:38:04,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:38:04,741 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) [2022-07-13 22:38:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:04,769 INFO L93 Difference]: Finished difference Result 312 states and 430 transitions. [2022-07-13 22:38:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:38:04,770 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 [2022-07-13 22:38:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:04,771 INFO L225 Difference]: With dead ends: 312 [2022-07-13 22:38:04,771 INFO L226 Difference]: Without dead ends: 169 [2022-07-13 22:38:04,772 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 [2022-07-13 22:38:04,772 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 [2022-07-13 22:38:04,773 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] [2022-07-13 22:38:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-13 22:38:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2022-07-13 22:38:04,783 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) [2022-07-13 22:38:04,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 222 transitions. [2022-07-13 22:38:04,784 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 222 transitions. Word has length 124 [2022-07-13 22:38:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:04,784 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 222 transitions. [2022-07-13 22:38:04,785 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) [2022-07-13 22:38:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 222 transitions. [2022-07-13 22:38:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 22:38:04,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:04,786 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] [2022-07-13 22:38:04,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:38:05,004 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 [2022-07-13 22:38:05,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1892680832, now seen corresponding path program 3 times [2022-07-13 22:38:05,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:05,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361632073] [2022-07-13 22:38:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:05,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:38:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:38:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:38:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:38:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:38:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:38:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:38:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:38:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 22:38:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361632073] [2022-07-13 22:38:05,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361632073] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:38:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750485304] [2022-07-13 22:38:05,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:38:05,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:38:05,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:38:05,391 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) [2022-07-13 22:38:05,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:38:05,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 22:38:05,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:38:05,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 22:38:05,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:38:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-13 22:38:06,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:38:06,925 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-13 22:38:06,925 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 [2022-07-13 22:38:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-13 22:38:06,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750485304] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:38:06,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:38:06,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2022-07-13 22:38:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976263802] [2022-07-13 22:38:06,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:38:06,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:38:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:38:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:38:06,964 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) [2022-07-13 22:38:09,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:09,295 INFO L93 Difference]: Finished difference Result 401 states and 559 transitions. [2022-07-13 22:38:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-13 22:38:09,295 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 [2022-07-13 22:38:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:09,298 INFO L225 Difference]: With dead ends: 401 [2022-07-13 22:38:09,298 INFO L226 Difference]: Without dead ends: 266 [2022-07-13 22:38:09,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 270 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=511, Invalid=3029, Unknown=0, NotChecked=0, Total=3540 [2022-07-13 22:38:09,301 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 354 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:38:09,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1182 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2299 Invalid, 0 Unknown, 357 Unchecked, 1.4s Time] [2022-07-13 22:38:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-13 22:38:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 215. [2022-07-13 22:38:09,314 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) [2022-07-13 22:38:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 293 transitions. [2022-07-13 22:38:09,316 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 293 transitions. Word has length 128 [2022-07-13 22:38:09,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:09,316 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 293 transitions. [2022-07-13 22:38:09,317 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) [2022-07-13 22:38:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 293 transitions. [2022-07-13 22:38:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:38:09,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:09,319 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] [2022-07-13 22:38:09,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:38:09,538 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 [2022-07-13 22:38:09,538 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:09,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:09,539 INFO L85 PathProgramCache]: Analyzing trace with hash -793075011, now seen corresponding path program 1 times [2022-07-13 22:38:09,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:09,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19726755] [2022-07-13 22:38:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:38:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:38:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:38:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:38:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:38:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:38:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:38:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:38:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-13 22:38:09,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19726755] [2022-07-13 22:38:09,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19726755] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:38:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166364451] [2022-07-13 22:38:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:09,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:38:09,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:38:09,734 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) [2022-07-13 22:38:09,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:38:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:38:10,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:38:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-13 22:38:10,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:38:10,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166364451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:38:10,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:38:10,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 22:38:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90463574] [2022-07-13 22:38:10,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:38:10,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:38:10,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:38:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:38:10,235 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) [2022-07-13 22:38:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:10,263 INFO L93 Difference]: Finished difference Result 416 states and 585 transitions. [2022-07-13 22:38:10,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:38:10,264 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 [2022-07-13 22:38:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:10,265 INFO L225 Difference]: With dead ends: 416 [2022-07-13 22:38:10,266 INFO L226 Difference]: Without dead ends: 233 [2022-07-13 22:38:10,267 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 [2022-07-13 22:38:10,267 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 [2022-07-13 22:38:10,268 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] [2022-07-13 22:38:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-13 22:38:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 221. [2022-07-13 22:38:10,287 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) [2022-07-13 22:38:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 299 transitions. [2022-07-13 22:38:10,289 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 299 transitions. Word has length 130 [2022-07-13 22:38:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:10,289 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 299 transitions. [2022-07-13 22:38:10,290 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) [2022-07-13 22:38:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 299 transitions. [2022-07-13 22:38:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:38:10,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:10,292 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] [2022-07-13 22:38:10,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:38:10,499 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 [2022-07-13 22:38:10,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2144460229, now seen corresponding path program 1 times [2022-07-13 22:38:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:10,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679497684] [2022-07-13 22:38:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:38:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:38:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:38:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:38:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:38:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:38:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:38:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:38:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-13 22:38:10,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:10,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679497684] [2022-07-13 22:38:10,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679497684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:38:10,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:38:10,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:38:10,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589863968] [2022-07-13 22:38:10,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:38:10,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:38:10,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:10,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:38:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:38:10,833 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) [2022-07-13 22:38:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:11,219 INFO L93 Difference]: Finished difference Result 444 states and 635 transitions. [2022-07-13 22:38:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:38:11,219 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 [2022-07-13 22:38:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:11,221 INFO L225 Difference]: With dead ends: 444 [2022-07-13 22:38:11,221 INFO L226 Difference]: Without dead ends: 263 [2022-07-13 22:38:11,222 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 [2022-07-13 22:38:11,223 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 [2022-07-13 22:38:11,223 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] [2022-07-13 22:38:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-13 22:38:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 235. [2022-07-13 22:38:11,238 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) [2022-07-13 22:38:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 319 transitions. [2022-07-13 22:38:11,240 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 319 transitions. Word has length 130 [2022-07-13 22:38:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:11,240 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 319 transitions. [2022-07-13 22:38:11,240 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) [2022-07-13 22:38:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 319 transitions. [2022-07-13 22:38:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:38:11,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:11,242 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] [2022-07-13 22:38:11,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:38:11,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:11,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1892341629, now seen corresponding path program 1 times [2022-07-13 22:38:11,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:11,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593716473] [2022-07-13 22:38:11,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:11,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:38:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:38:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:38:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:38:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:38:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:38:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:38:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:38:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-13 22:38:11,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:11,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593716473] [2022-07-13 22:38:11,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593716473] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:38:11,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600325114] [2022-07-13 22:38:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:11,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:38:11,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:38:11,564 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) [2022-07-13 22:38:11,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:38:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:38:12,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:38:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-13 22:38:12,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:38:12,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600325114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:38:12,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:38:12,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-13 22:38:12,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297377041] [2022-07-13 22:38:12,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:38:12,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:38:12,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:12,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:38:12,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:38:12,099 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) [2022-07-13 22:38:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:12,245 INFO L93 Difference]: Finished difference Result 440 states and 627 transitions. [2022-07-13 22:38:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:38:12,245 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 [2022-07-13 22:38:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:12,247 INFO L225 Difference]: With dead ends: 440 [2022-07-13 22:38:12,247 INFO L226 Difference]: Without dead ends: 237 [2022-07-13 22:38:12,249 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 [2022-07-13 22:38:12,250 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 [2022-07-13 22:38:12,250 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] [2022-07-13 22:38:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-13 22:38:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2022-07-13 22:38:12,260 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) [2022-07-13 22:38:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 311 transitions. [2022-07-13 22:38:12,262 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 311 transitions. Word has length 130 [2022-07-13 22:38:12,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:12,262 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 311 transitions. [2022-07-13 22:38:12,263 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) [2022-07-13 22:38:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 311 transitions. [2022-07-13 22:38:12,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:38:12,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:12,265 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] [2022-07-13 22:38:12,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:38:12,487 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 [2022-07-13 22:38:12,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:12,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash -505128901, now seen corresponding path program 2 times [2022-07-13 22:38:12,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:12,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578058179] [2022-07-13 22:38:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:12,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:38:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:38:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:38:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:38:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:38:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:38:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:38:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:38:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 22:38:12,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:12,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578058179] [2022-07-13 22:38:12,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578058179] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:38:12,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556389636] [2022-07-13 22:38:12,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:38:12,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:38:12,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:38:12,742 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) [2022-07-13 22:38:12,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:38:13,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:38:13,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:38:13,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:38:13,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:38:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-13 22:38:13,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:38:13,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556389636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:38:13,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:38:13,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 22:38:13,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900950306] [2022-07-13 22:38:13,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:38:13,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:38:13,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:13,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:38:13,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:38:13,285 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) [2022-07-13 22:38:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:38:13,314 INFO L93 Difference]: Finished difference Result 411 states and 571 transitions. [2022-07-13 22:38:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:38:13,314 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 [2022-07-13 22:38:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:38:13,316 INFO L225 Difference]: With dead ends: 411 [2022-07-13 22:38:13,316 INFO L226 Difference]: Without dead ends: 210 [2022-07-13 22:38:13,317 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 [2022-07-13 22:38:13,317 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 [2022-07-13 22:38:13,318 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] [2022-07-13 22:38:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-13 22:38:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2022-07-13 22:38:13,328 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) [2022-07-13 22:38:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 268 transitions. [2022-07-13 22:38:13,330 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 268 transitions. Word has length 130 [2022-07-13 22:38:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:38:13,330 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-07-13 22:38:13,330 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) [2022-07-13 22:38:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 268 transitions. [2022-07-13 22:38:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:38:13,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:38:13,332 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] [2022-07-13 22:38:13,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:38:13,547 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 [2022-07-13 22:38:13,547 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:38:13,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:38:13,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1883435129, now seen corresponding path program 3 times [2022-07-13 22:38:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:38:13,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417069447] [2022-07-13 22:38:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:38:13,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:38:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:38:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:38:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:38:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:38:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:38:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:38:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:38:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:38:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:38:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:38:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:38:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:38:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:14,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:38:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:38:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 22:38:14,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:38:14,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417069447] [2022-07-13 22:38:14,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417069447] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:38:14,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526982727] [2022-07-13 22:38:14,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:38:14,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:38:14,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:38:14,012 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) [2022-07-13 22:38:14,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:38:14,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 22:38:14,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:38:14,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 22:38:14,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:38:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-13 22:38:26,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:38:27,255 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-13 22:38:27,256 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 [2022-07-13 22:38:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-13 22:38:27,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526982727] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:38:27,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:38:27,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 23 [2022-07-13 22:38:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130159906] [2022-07-13 22:38:27,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:38:27,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 22:38:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:38:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 22:38:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=427, Unknown=2, NotChecked=0, Total=506 [2022-07-13 22:38:27,293 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) [2022-07-13 22:39:11,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:11,150 INFO L93 Difference]: Finished difference Result 388 states and 518 transitions. [2022-07-13 22:39:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 22:39:11,151 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 [2022-07-13 22:39:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:11,153 INFO L225 Difference]: With dead ends: 388 [2022-07-13 22:39:11,153 INFO L226 Difference]: Without dead ends: 260 [2022-07-13 22:39:11,155 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 [2022-07-13 22:39:11,155 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 [2022-07-13 22:39:11,158 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] [2022-07-13 22:39:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-13 22:39:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 222. [2022-07-13 22:39:11,172 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) [2022-07-13 22:39:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 291 transitions. [2022-07-13 22:39:11,174 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 291 transitions. Word has length 130 [2022-07-13 22:39:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:11,174 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 291 transitions. [2022-07-13 22:39:11,175 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) [2022-07-13 22:39:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 291 transitions. [2022-07-13 22:39:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:39:11,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:11,177 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] [2022-07-13 22:39:11,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:39:11,403 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 [2022-07-13 22:39:11,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:11,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash 933699569, now seen corresponding path program 1 times [2022-07-13 22:39:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:11,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341234980] [2022-07-13 22:39:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:39:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:39:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:39:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:39:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:39:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:39:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:39:11,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:11,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341234980] [2022-07-13 22:39:11,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341234980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:39:11,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:39:11,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:39:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096710320] [2022-07-13 22:39:11,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:39:11,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:39:11,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:11,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:39:11,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:39:11,786 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) [2022-07-13 22:39:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:12,062 INFO L93 Difference]: Finished difference Result 398 states and 522 transitions. [2022-07-13 22:39:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:39:12,063 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 [2022-07-13 22:39:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:12,064 INFO L225 Difference]: With dead ends: 398 [2022-07-13 22:39:12,064 INFO L226 Difference]: Without dead ends: 222 [2022-07-13 22:39:12,065 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 [2022-07-13 22:39:12,066 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 [2022-07-13 22:39:12,066 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] [2022-07-13 22:39:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-13 22:39:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-07-13 22:39:12,078 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) [2022-07-13 22:39:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 290 transitions. [2022-07-13 22:39:12,079 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 290 transitions. Word has length 130 [2022-07-13 22:39:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:12,079 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 290 transitions. [2022-07-13 22:39:12,080 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) [2022-07-13 22:39:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 290 transitions. [2022-07-13 22:39:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:39:12,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:12,081 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] [2022-07-13 22:39:12,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:39:12,081 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:12,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1702869584, now seen corresponding path program 1 times [2022-07-13 22:39:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:12,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445439547] [2022-07-13 22:39:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:39:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:39:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:39:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:39:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:39:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:39:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 22:39:12,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445439547] [2022-07-13 22:39:12,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445439547] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451134370] [2022-07-13 22:39:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:12,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:39:12,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:39:12,712 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) [2022-07-13 22:39:12,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:39:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:13,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-13 22:39:13,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:39:13,259 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 [2022-07-13 22:39:17,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:39:17,405 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 [2022-07-13 22:39:19,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:39:19,598 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-13 22:39:19,598 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 [2022-07-13 22:39:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 22:39:19,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:39:19,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451134370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:39:19,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:39:19,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 24 [2022-07-13 22:39:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439672700] [2022-07-13 22:39:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:39:19,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:39:19,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:39:19,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=471, Unknown=1, NotChecked=0, Total=552 [2022-07-13 22:39:19,603 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) [2022-07-13 22:39:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:19,790 INFO L93 Difference]: Finished difference Result 499 states and 656 transitions. [2022-07-13 22:39:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:39:19,790 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 [2022-07-13 22:39:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:19,792 INFO L225 Difference]: With dead ends: 499 [2022-07-13 22:39:19,792 INFO L226 Difference]: Without dead ends: 309 [2022-07-13 22:39:19,794 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 [2022-07-13 22:39:19,794 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:39:19,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1853 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 142 Unchecked, 0.1s Time] [2022-07-13 22:39:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-13 22:39:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 260. [2022-07-13 22:39:19,807 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) [2022-07-13 22:39:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 335 transitions. [2022-07-13 22:39:19,809 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 335 transitions. Word has length 130 [2022-07-13 22:39:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:19,809 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 335 transitions. [2022-07-13 22:39:19,809 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) [2022-07-13 22:39:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 335 transitions. [2022-07-13 22:39:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 22:39:19,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:19,811 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] [2022-07-13 22:39:19,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:39:20,038 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 [2022-07-13 22:39:20,038 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1674369294, now seen corresponding path program 1 times [2022-07-13 22:39:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:20,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005770732] [2022-07-13 22:39:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:20,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:39:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:39:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:39:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:39:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:39:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:39:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 22:39:20,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:20,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005770732] [2022-07-13 22:39:20,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005770732] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:20,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737801511] [2022-07-13 22:39:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:20,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:39:20,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:39:20,668 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) [2022-07-13 22:39:20,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:39:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:21,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-13 22:39:21,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:39:21,299 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 [2022-07-13 22:39:21,303 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 [2022-07-13 22:39:21,815 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 [2022-07-13 22:39:21,840 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 [2022-07-13 22:39:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:39:21,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:39:21,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737801511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:39:21,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:39:21,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 29 [2022-07-13 22:39:21,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293666783] [2022-07-13 22:39:21,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:39:21,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:39:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:39:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-07-13 22:39:21,893 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) [2022-07-13 22:39:22,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:22,255 INFO L93 Difference]: Finished difference Result 509 states and 668 transitions. [2022-07-13 22:39:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:39:22,256 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 [2022-07-13 22:39:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:22,258 INFO L225 Difference]: With dead ends: 509 [2022-07-13 22:39:22,258 INFO L226 Difference]: Without dead ends: 316 [2022-07-13 22:39:22,259 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 [2022-07-13 22:39:22,260 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:39:22,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1363 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 175 Unchecked, 0.3s Time] [2022-07-13 22:39:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-13 22:39:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 282. [2022-07-13 22:39:22,274 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) [2022-07-13 22:39:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 354 transitions. [2022-07-13 22:39:22,275 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 354 transitions. Word has length 130 [2022-07-13 22:39:22,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:22,275 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 354 transitions. [2022-07-13 22:39:22,276 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) [2022-07-13 22:39:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 354 transitions. [2022-07-13 22:39:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-13 22:39:22,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:22,277 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] [2022-07-13 22:39:22,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-13 22:39:22,491 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 [2022-07-13 22:39:22,491 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:22,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1989368778, now seen corresponding path program 2 times [2022-07-13 22:39:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:22,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387940318] [2022-07-13 22:39:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:22,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:39:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:39:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:39:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 22:39:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:39:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:39:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-13 22:39:22,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:22,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387940318] [2022-07-13 22:39:22,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387940318] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:22,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405922121] [2022-07-13 22:39:22,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:39:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:39:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:39:22,794 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) [2022-07-13 22:39:22,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:39:23,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:39:23,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:39:23,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:39:23,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:39:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 22:39:23,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:39:23,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405922121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:39:23,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:39:23,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-13 22:39:23,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325262607] [2022-07-13 22:39:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:39:23,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:39:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:39:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:39:23,597 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) [2022-07-13 22:39:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:23,745 INFO L93 Difference]: Finished difference Result 473 states and 601 transitions. [2022-07-13 22:39:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:39:23,746 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 [2022-07-13 22:39:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:23,747 INFO L225 Difference]: With dead ends: 473 [2022-07-13 22:39:23,747 INFO L226 Difference]: Without dead ends: 275 [2022-07-13 22:39:23,748 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 [2022-07-13 22:39:23,749 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 [2022-07-13 22:39:23,749 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] [2022-07-13 22:39:23,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-13 22:39:23,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2022-07-13 22:39:23,762 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) [2022-07-13 22:39:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 336 transitions. [2022-07-13 22:39:23,764 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 336 transitions. Word has length 134 [2022-07-13 22:39:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:23,764 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 336 transitions. [2022-07-13 22:39:23,764 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) [2022-07-13 22:39:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 336 transitions. [2022-07-13 22:39:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 22:39:23,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:23,767 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] [2022-07-13 22:39:23,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:39:23,983 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 [2022-07-13 22:39:23,983 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash -549959673, now seen corresponding path program 1 times [2022-07-13 22:39:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:23,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652508835] [2022-07-13 22:39:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:39:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:39:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:39:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:39:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:39:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:39:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:39:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-13 22:39:24,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:24,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652508835] [2022-07-13 22:39:24,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652508835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:39:24,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:39:24,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-13 22:39:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550527904] [2022-07-13 22:39:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:39:24,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:39:24,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:24,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:39:24,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:39:24,673 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) [2022-07-13 22:39:26,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:26,764 INFO L93 Difference]: Finished difference Result 513 states and 682 transitions. [2022-07-13 22:39:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:39:26,765 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 [2022-07-13 22:39:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:26,767 INFO L225 Difference]: With dead ends: 513 [2022-07-13 22:39:26,767 INFO L226 Difference]: Without dead ends: 327 [2022-07-13 22:39:26,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 22:39:26,769 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 165 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:39:26,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 884 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 22:39:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-13 22:39:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 295. [2022-07-13 22:39:26,786 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) [2022-07-13 22:39:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 379 transitions. [2022-07-13 22:39:26,788 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 379 transitions. Word has length 137 [2022-07-13 22:39:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:26,788 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 379 transitions. [2022-07-13 22:39:26,789 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) [2022-07-13 22:39:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 379 transitions. [2022-07-13 22:39:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 22:39:26,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:26,790 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] [2022-07-13 22:39:26,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:39:26,790 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1094566079, now seen corresponding path program 3 times [2022-07-13 22:39:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:26,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057579996] [2022-07-13 22:39:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:39:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:39:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:39:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:39:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:39:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 22:39:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-13 22:39:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057579996] [2022-07-13 22:39:27,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057579996] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021958177] [2022-07-13 22:39:27,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:39:27,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:39:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:39:27,456 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) [2022-07-13 22:39:27,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:39:27,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 22:39:27,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:39:27,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 22:39:27,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:39:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-13 22:39:28,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:39:29,001 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-13 22:39:29,001 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 [2022-07-13 22:39:29,006 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-13 22:39:29,006 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 [2022-07-13 22:39:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-13 22:39:29,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021958177] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:39:29,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:39:29,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 33 [2022-07-13 22:39:29,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851772598] [2022-07-13 22:39:29,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:39:29,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 22:39:29,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 22:39:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 22:39:29,044 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) [2022-07-13 22:39:30,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:30,984 INFO L93 Difference]: Finished difference Result 503 states and 639 transitions. [2022-07-13 22:39:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 22:39:30,985 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 [2022-07-13 22:39:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:30,987 INFO L225 Difference]: With dead ends: 503 [2022-07-13 22:39:30,987 INFO L226 Difference]: Without dead ends: 356 [2022-07-13 22:39:30,989 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 [2022-07-13 22:39:30,989 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 352 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:39:30,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 846 Invalid, 3238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2703 Invalid, 0 Unknown, 409 Unchecked, 1.5s Time] [2022-07-13 22:39:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-13 22:39:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 331. [2022-07-13 22:39:31,009 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) [2022-07-13 22:39:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 413 transitions. [2022-07-13 22:39:31,011 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 413 transitions. Word has length 136 [2022-07-13 22:39:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:31,011 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 413 transitions. [2022-07-13 22:39:31,012 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) [2022-07-13 22:39:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 413 transitions. [2022-07-13 22:39:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 22:39:31,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:31,013 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] [2022-07-13 22:39:31,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:39:31,230 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 [2022-07-13 22:39:31,231 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:31,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1774102651, now seen corresponding path program 1 times [2022-07-13 22:39:31,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:31,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933803659] [2022-07-13 22:39:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:31,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:39:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:39:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:39:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:39:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:39:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:39:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-13 22:39:31,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:31,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933803659] [2022-07-13 22:39:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933803659] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:31,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71174370] [2022-07-13 22:39:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:31,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:39:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:39:31,526 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) [2022-07-13 22:39:31,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:39:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:39:32,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:39:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-13 22:39:32,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:39:32,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71174370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:39:32,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:39:32,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-13 22:39:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766846963] [2022-07-13 22:39:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:39:32,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:39:32,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:39:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:39:32,051 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) [2022-07-13 22:39:32,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:32,179 INFO L93 Difference]: Finished difference Result 509 states and 637 transitions. [2022-07-13 22:39:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:39:32,180 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 [2022-07-13 22:39:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:32,183 INFO L225 Difference]: With dead ends: 509 [2022-07-13 22:39:32,183 INFO L226 Difference]: Without dead ends: 277 [2022-07-13 22:39:32,184 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 [2022-07-13 22:39:32,185 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 [2022-07-13 22:39:32,185 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] [2022-07-13 22:39:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-13 22:39:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 267. [2022-07-13 22:39:32,204 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) [2022-07-13 22:39:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 326 transitions. [2022-07-13 22:39:32,207 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 326 transitions. Word has length 140 [2022-07-13 22:39:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:32,207 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 326 transitions. [2022-07-13 22:39:32,207 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) [2022-07-13 22:39:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 326 transitions. [2022-07-13 22:39:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 22:39:32,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:32,209 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] [2022-07-13 22:39:32,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:39:32,435 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 [2022-07-13 22:39:32,436 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1679989516, now seen corresponding path program 1 times [2022-07-13 22:39:32,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:32,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866414590] [2022-07-13 22:39:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:32,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:39:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:39:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:39:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:39:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:39:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:39:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-13 22:39:32,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:32,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866414590] [2022-07-13 22:39:32,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866414590] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:32,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117505012] [2022-07-13 22:39:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:32,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:39:32,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:39:32,807 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) [2022-07-13 22:39:32,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:39:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:33,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-13 22:39:33,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:39:33,357 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 [2022-07-13 22:39:33,367 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 [2022-07-13 22:39:33,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:39:33,627 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 [2022-07-13 22:39:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 102 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 22:39:34,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:39:36,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117505012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:36,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:39:36,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 26 [2022-07-13 22:39:36,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93108041] [2022-07-13 22:39:36,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:39:36,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:39:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:39:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=957, Unknown=1, NotChecked=0, Total=1056 [2022-07-13 22:39:36,489 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) [2022-07-13 22:39:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:38,297 INFO L93 Difference]: Finished difference Result 604 states and 741 transitions. [2022-07-13 22:39:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 22:39:38,299 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 [2022-07-13 22:39:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:38,301 INFO L225 Difference]: With dead ends: 604 [2022-07-13 22:39:38,301 INFO L226 Difference]: Without dead ends: 426 [2022-07-13 22:39:38,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=421, Invalid=3738, Unknown=1, NotChecked=0, Total=4160 [2022-07-13 22:39:38,303 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 156 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:39:38,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1065 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1834 Invalid, 0 Unknown, 811 Unchecked, 1.0s Time] [2022-07-13 22:39:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-13 22:39:38,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 377. [2022-07-13 22:39:38,323 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) [2022-07-13 22:39:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 458 transitions. [2022-07-13 22:39:38,325 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 458 transitions. Word has length 142 [2022-07-13 22:39:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:38,325 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 458 transitions. [2022-07-13 22:39:38,325 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) [2022-07-13 22:39:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 458 transitions. [2022-07-13 22:39:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 22:39:38,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:38,327 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] [2022-07-13 22:39:38,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 22:39:38,535 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 [2022-07-13 22:39:38,536 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:38,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash -181271120, now seen corresponding path program 2 times [2022-07-13 22:39:38,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:38,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191137223] [2022-07-13 22:39:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:39:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:39:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:39:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:39:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:39:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:39:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:39:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:39:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:39:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:39:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:39:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:39:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-13 22:39:39,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:39,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191137223] [2022-07-13 22:39:39,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191137223] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:39,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175572615] [2022-07-13 22:39:39,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:39:39,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:39:39,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:39:39,624 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) [2022-07-13 22:39:39,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 22:39:40,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:39:40,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:39:40,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-13 22:39:40,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:39:40,558 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 [2022-07-13 22:39:42,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:39:42,761 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 [2022-07-13 22:39:49,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:39:49,110 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 [2022-07-13 22:39:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 64 proven. 45 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-13 22:39:57,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:39:59,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175572615] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:39:59,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:39:59,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 33 [2022-07-13 22:39:59,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197216145] [2022-07-13 22:39:59,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:39:59,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 22:39:59,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:59,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 22:39:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1432, Unknown=2, NotChecked=0, Total=1560 [2022-07-13 22:39:59,026 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) [2022-07-13 22:40:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:02,035 INFO L93 Difference]: Finished difference Result 613 states and 744 transitions. [2022-07-13 22:40:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 22:40:02,036 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 [2022-07-13 22:40:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:02,038 INFO L225 Difference]: With dead ends: 613 [2022-07-13 22:40:02,038 INFO L226 Difference]: Without dead ends: 460 [2022-07-13 22:40:02,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 207 SyntacticMatches, 15 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=526, Invalid=4874, Unknown=2, NotChecked=0, Total=5402 [2022-07-13 22:40:02,041 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 [2022-07-13 22:40:02,041 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] [2022-07-13 22:40:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-13 22:40:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 389. [2022-07-13 22:40:02,062 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) [2022-07-13 22:40:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 459 transitions. [2022-07-13 22:40:02,064 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 459 transitions. Word has length 142 [2022-07-13 22:40:02,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:02,065 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 459 transitions. [2022-07-13 22:40:02,065 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) [2022-07-13 22:40:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 459 transitions. [2022-07-13 22:40:02,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 22:40:02,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:02,067 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] [2022-07-13 22:40:02,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:02,287 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 [2022-07-13 22:40:02,287 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash 987319158, now seen corresponding path program 1 times [2022-07-13 22:40:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:02,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170252487] [2022-07-13 22:40:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:40:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:40:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:40:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:40:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:40:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:40:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:40:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:40:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:40:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:40:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:40:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-13 22:40:02,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:02,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170252487] [2022-07-13 22:40:02,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170252487] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:02,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368048003] [2022-07-13 22:40:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:02,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:02,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:02,713 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) [2022-07-13 22:40:02,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 22:40:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:03,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-13 22:40:03,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:03,191 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 [2022-07-13 22:40:03,341 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:40:03,342 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 [2022-07-13 22:40:03,677 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-13 22:40:03,678 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 [2022-07-13 22:40:03,722 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:40:03,722 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 [2022-07-13 22:40:03,727 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 [2022-07-13 22:40:04,019 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 [2022-07-13 22:40:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 48 proven. 77 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 22:40:04,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:05,444 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 [2022-07-13 22:40:05,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368048003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:05,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:40:05,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22] total 33 [2022-07-13 22:40:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497003704] [2022-07-13 22:40:05,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:05,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 22:40:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 22:40:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1556, Unknown=1, NotChecked=80, Total=1806 [2022-07-13 22:40:05,464 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) [2022-07-13 22:40:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:06,972 INFO L93 Difference]: Finished difference Result 628 states and 743 transitions. [2022-07-13 22:40:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-13 22:40:06,972 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 [2022-07-13 22:40:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:06,975 INFO L225 Difference]: With dead ends: 628 [2022-07-13 22:40:06,975 INFO L226 Difference]: Without dead ends: 522 [2022-07-13 22:40:06,977 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 [2022-07-13 22:40:06,977 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:06,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 835 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1089 Invalid, 0 Unknown, 790 Unchecked, 0.8s Time] [2022-07-13 22:40:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-07-13 22:40:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 503. [2022-07-13 22:40:07,005 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) [2022-07-13 22:40:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 584 transitions. [2022-07-13 22:40:07,007 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 584 transitions. Word has length 142 [2022-07-13 22:40:07,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:07,007 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 584 transitions. [2022-07-13 22:40:07,008 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) [2022-07-13 22:40:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 584 transitions. [2022-07-13 22:40:07,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 22:40:07,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:07,009 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] [2022-07-13 22:40:07,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:07,227 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 [2022-07-13 22:40:07,227 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2031144824, now seen corresponding path program 1 times [2022-07-13 22:40:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:07,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189634951] [2022-07-13 22:40:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:07,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:40:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:40:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:40:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:40:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:40:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:40:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:40:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:40:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:40:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:40:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:40:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 18 proven. 51 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-13 22:40:07,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:07,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189634951] [2022-07-13 22:40:07,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189634951] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:07,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019803177] [2022-07-13 22:40:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:07,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:07,948 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) [2022-07-13 22:40:07,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 22:40:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-13 22:40:08,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:08,691 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:40:08,691 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 [2022-07-13 22:40:08,707 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 [2022-07-13 22:40:08,787 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-13 22:40:08,788 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 [2022-07-13 22:40:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 80 proven. 48 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 22:40:15,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-13 22:40:16,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019803177] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:40:16,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:40:16,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 13] total 50 [2022-07-13 22:40:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909508686] [2022-07-13 22:40:16,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:16,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-13 22:40:16,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-13 22:40:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2257, Unknown=1, NotChecked=0, Total=2450 [2022-07-13 22:40:16,802 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) [2022-07-13 22:40:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:24,411 INFO L93 Difference]: Finished difference Result 853 states and 1037 transitions. [2022-07-13 22:40:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-13 22:40:24,412 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 [2022-07-13 22:40:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:24,414 INFO L225 Difference]: With dead ends: 853 [2022-07-13 22:40:24,415 INFO L226 Difference]: Without dead ends: 560 [2022-07-13 22:40:24,418 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 [2022-07-13 22:40:24,418 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 501 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 6901 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:24,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1935 Invalid, 8542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 6901 Invalid, 0 Unknown, 1212 Unchecked, 4.7s Time] [2022-07-13 22:40:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-13 22:40:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 467. [2022-07-13 22:40:24,448 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) [2022-07-13 22:40:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 525 transitions. [2022-07-13 22:40:24,449 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 525 transitions. Word has length 142 [2022-07-13 22:40:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:24,450 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 525 transitions. [2022-07-13 22:40:24,450 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) [2022-07-13 22:40:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 525 transitions. [2022-07-13 22:40:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:40:24,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:24,452 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] [2022-07-13 22:40:24,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:24,667 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 [2022-07-13 22:40:24,667 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1185688539, now seen corresponding path program 1 times [2022-07-13 22:40:24,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:24,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142446090] [2022-07-13 22:40:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:40:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:40:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:40:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:40:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:40:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:40:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:40:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:40:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:40:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:40:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:40:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-13 22:40:24,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:24,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142446090] [2022-07-13 22:40:24,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142446090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:24,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:24,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:40:24,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588561088] [2022-07-13 22:40:24,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:24,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:40:24,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:24,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:40:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:40:24,885 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) [2022-07-13 22:40:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:25,411 INFO L93 Difference]: Finished difference Result 487 states and 548 transitions. [2022-07-13 22:40:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:40:25,412 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 [2022-07-13 22:40:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:25,414 INFO L225 Difference]: With dead ends: 487 [2022-07-13 22:40:25,414 INFO L226 Difference]: Without dead ends: 485 [2022-07-13 22:40:25,414 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 [2022-07-13 22:40:25,415 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 95 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-13 22:40:25,415 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] [2022-07-13 22:40:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-07-13 22:40:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2022-07-13 22:40:25,445 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) [2022-07-13 22:40:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 538 transitions. [2022-07-13 22:40:25,447 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 538 transitions. Word has length 144 [2022-07-13 22:40:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:25,447 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 538 transitions. [2022-07-13 22:40:25,447 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) [2022-07-13 22:40:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 538 transitions. [2022-07-13 22:40:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:40:25,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:25,449 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] [2022-07-13 22:40:25,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:40:25,449 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1886753117, now seen corresponding path program 1 times [2022-07-13 22:40:25,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:25,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078212207] [2022-07-13 22:40:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:25,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:40:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:40:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:40:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:25,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:40:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:40:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:40:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:40:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:40:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:40:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:40:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:40:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 34 proven. 39 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-13 22:40:26,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:26,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078212207] [2022-07-13 22:40:26,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078212207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:26,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862755804] [2022-07-13 22:40:26,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:26,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:26,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:26,180 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) [2022-07-13 22:40:26,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 22:40:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 2773 conjuncts, 105 conjunts are in the unsatisfiable core [2022-07-13 22:40:26,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:26,802 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 [2022-07-13 22:40:31,225 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:40:31,226 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 [2022-07-13 22:40:31,230 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 [2022-07-13 22:40:31,312 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:40:31,312 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 [2022-07-13 22:40:31,314 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 [2022-07-13 22:40:32,387 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 22:40:32,388 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 [2022-07-13 22:40:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 22:40:32,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-13 22:40:33,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862755804] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:40:33,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:40:33,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 32, 16] total 63 [2022-07-13 22:40:33,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314000565] [2022-07-13 22:40:33,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:33,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-13 22:40:33,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-13 22:40:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3693, Unknown=1, NotChecked=0, Total=3906 [2022-07-13 22:40:33,621 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) [2022-07-13 22:40:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:42,503 INFO L93 Difference]: Finished difference Result 622 states and 728 transitions. [2022-07-13 22:40:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-07-13 22:40:42,503 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 [2022-07-13 22:40:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:42,505 INFO L225 Difference]: With dead ends: 622 [2022-07-13 22:40:42,506 INFO L226 Difference]: Without dead ends: 539 [2022-07-13 22:40:42,510 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 [2022-07-13 22:40:42,510 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 485 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 6506 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:42,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 2543 Invalid, 8535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 6506 Invalid, 0 Unknown, 1606 Unchecked, 3.6s Time] [2022-07-13 22:40:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-07-13 22:40:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 481. [2022-07-13 22:40:42,544 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) [2022-07-13 22:40:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 542 transitions. [2022-07-13 22:40:42,545 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 542 transitions. Word has length 144 [2022-07-13 22:40:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:42,546 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 542 transitions. [2022-07-13 22:40:42,546 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) [2022-07-13 22:40:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 542 transitions. [2022-07-13 22:40:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 22:40:42,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:42,548 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] [2022-07-13 22:40:42,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:42,767 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 [2022-07-13 22:40:42,767 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:42,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash -687982950, now seen corresponding path program 1 times [2022-07-13 22:40:42,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:42,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352512157] [2022-07-13 22:40:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:42,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:40:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:40:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:40:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:40:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:40:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:40:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:40:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:40:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:40:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:40:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:40:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-13 22:40:43,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:43,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352512157] [2022-07-13 22:40:43,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352512157] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:43,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734490273] [2022-07-13 22:40:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:43,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:43,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:43,293 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) [2022-07-13 22:40:43,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 22:40:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 124 conjunts are in the unsatisfiable core [2022-07-13 22:40:43,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:45,994 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:40:45,995 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 [2022-07-13 22:40:45,999 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 [2022-07-13 22:40:46,056 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:40:46,056 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 [2022-07-13 22:40:46,064 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 [2022-07-13 22:40:46,613 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:40:46,614 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 [2022-07-13 22:40:46,618 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 [2022-07-13 22:40:47,112 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 [2022-07-13 22:40:52,204 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:40:52,205 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 [2022-07-13 22:40:52,213 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 [2022-07-13 22:40:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 80 proven. 60 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-13 22:40:52,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:53,883 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-13 22:40:53,884 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 [2022-07-13 22:40:53,890 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-13 22:40:53,890 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 [2022-07-13 22:40:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 22:40:54,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734490273] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:40:54,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:40:54,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 42, 22] total 78 [2022-07-13 22:40:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060291325] [2022-07-13 22:40:54,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:54,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-07-13 22:40:54,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-07-13 22:40:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=5744, Unknown=2, NotChecked=0, Total=6006 [2022-07-13 22:40:54,181 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) [2022-07-13 22:41:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:02,766 INFO L93 Difference]: Finished difference Result 759 states and 891 transitions. [2022-07-13 22:41:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-07-13 22:41:02,766 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 [2022-07-13 22:41:02,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:02,769 INFO L225 Difference]: With dead ends: 759 [2022-07-13 22:41:02,769 INFO L226 Difference]: Without dead ends: 620 [2022-07-13 22:41:02,771 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 [2022-07-13 22:41:02,772 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, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:02,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 2941 Invalid, 11589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 8623 Invalid, 0 Unknown, 2589 Unchecked, 4.5s Time] [2022-07-13 22:41:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-07-13 22:41:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 537. [2022-07-13 22:41:02,811 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) [2022-07-13 22:41:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 602 transitions. [2022-07-13 22:41:02,813 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 602 transitions. Word has length 151 [2022-07-13 22:41:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:02,813 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 602 transitions. [2022-07-13 22:41:02,813 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) [2022-07-13 22:41:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 602 transitions. [2022-07-13 22:41:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:41:02,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:02,815 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] [2022-07-13 22:41:02,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:03,031 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 [2022-07-13 22:41:03,032 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash 201357244, now seen corresponding path program 1 times [2022-07-13 22:41:03,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:03,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271291941] [2022-07-13 22:41:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:03,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:41:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:41:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:41:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:41:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:41:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:41:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:41:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:41:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:41:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:41:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-13 22:41:03,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:03,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271291941] [2022-07-13 22:41:03,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271291941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:03,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:03,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:41:03,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619934318] [2022-07-13 22:41:03,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:03,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:41:03,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:03,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:41:03,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:41:03,293 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) [2022-07-13 22:41:03,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:03,800 INFO L93 Difference]: Finished difference Result 620 states and 706 transitions. [2022-07-13 22:41:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:41:03,800 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 [2022-07-13 22:41:03,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:03,802 INFO L225 Difference]: With dead ends: 620 [2022-07-13 22:41:03,802 INFO L226 Difference]: Without dead ends: 569 [2022-07-13 22:41:03,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:41:03,803 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 [2022-07-13 22:41:03,803 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] [2022-07-13 22:41:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-07-13 22:41:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 544. [2022-07-13 22:41:03,844 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) [2022-07-13 22:41:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 609 transitions. [2022-07-13 22:41:03,845 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 609 transitions. Word has length 155 [2022-07-13 22:41:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:03,846 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 609 transitions. [2022-07-13 22:41:03,846 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) [2022-07-13 22:41:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 609 transitions. [2022-07-13 22:41:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:41:03,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:03,848 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] [2022-07-13 22:41:03,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:41:03,848 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2095970207, now seen corresponding path program 1 times [2022-07-13 22:41:03,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:03,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838020904] [2022-07-13 22:41:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:03,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:41:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:41:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:41:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:41:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:41:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:41:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:41:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:41:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:41:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:41:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-13 22:41:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:04,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838020904] [2022-07-13 22:41:04,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838020904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:04,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:04,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:41:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635116311] [2022-07-13 22:41:04,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:04,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:41:04,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:41:04,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:41:04,129 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) [2022-07-13 22:41:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:04,678 INFO L93 Difference]: Finished difference Result 562 states and 632 transitions. [2022-07-13 22:41:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:41:04,678 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 [2022-07-13 22:41:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:04,680 INFO L225 Difference]: With dead ends: 562 [2022-07-13 22:41:04,680 INFO L226 Difference]: Without dead ends: 560 [2022-07-13 22:41:04,680 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 [2022-07-13 22:41:04,681 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 [2022-07-13 22:41:04,681 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] [2022-07-13 22:41:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-13 22:41:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 548. [2022-07-13 22:41:04,722 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) [2022-07-13 22:41:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 612 transitions. [2022-07-13 22:41:04,724 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 612 transitions. Word has length 156 [2022-07-13 22:41:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:04,724 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 612 transitions. [2022-07-13 22:41:04,724 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) [2022-07-13 22:41:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 612 transitions. [2022-07-13 22:41:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 22:41:04,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:04,726 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] [2022-07-13 22:41:04,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:41:04,727 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash -112341763, now seen corresponding path program 1 times [2022-07-13 22:41:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:04,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320356532] [2022-07-13 22:41:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:41:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:41:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:41:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:41:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:41:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:41:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:41:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:41:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:41:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:41:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 22:41:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 22 proven. 48 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 22:41:05,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:05,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320356532] [2022-07-13 22:41:05,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320356532] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:05,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469855485] [2022-07-13 22:41:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:05,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:05,694 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) [2022-07-13 22:41:05,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 22:41:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:06,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2829 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-13 22:41:06,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:06,907 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 [2022-07-13 22:41:07,175 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:41:07,176 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 [2022-07-13 22:41:07,576 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-13 22:41:07,577 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 [2022-07-13 22:41:07,657 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-07-13 22:41:07,657 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 [2022-07-13 22:41:07,665 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 [2022-07-13 22:41:07,692 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 [2022-07-13 22:41:07,718 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-13 22:41:07,718 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 [2022-07-13 22:41:07,845 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 22:41:07,846 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 [2022-07-13 22:41:08,750 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 22:41:08,751 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 [2022-07-13 22:41:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 61 proven. 99 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 22:41:08,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:41:09,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469855485] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:09,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:41:09,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 30] total 44 [2022-07-13 22:41:09,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926279139] [2022-07-13 22:41:09,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:41:09,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-13 22:41:09,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-13 22:41:09,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2288, Unknown=0, NotChecked=0, Total=2450 [2022-07-13 22:41:09,948 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) [2022-07-13 22:41:14,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:14,009 INFO L93 Difference]: Finished difference Result 652 states and 744 transitions. [2022-07-13 22:41:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-13 22:41:14,009 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 [2022-07-13 22:41:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:14,011 INFO L225 Difference]: With dead ends: 652 [2022-07-13 22:41:14,011 INFO L226 Difference]: Without dead ends: 639 [2022-07-13 22:41:14,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 181 SyntacticMatches, 25 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=636, Invalid=7553, Unknown=1, NotChecked=0, Total=8190 [2022-07-13 22:41:14,012 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 469 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:14,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1396 Invalid, 5836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3757 Invalid, 0 Unknown, 1723 Unchecked, 2.2s Time] [2022-07-13 22:41:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-13 22:41:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 605. [2022-07-13 22:41:14,062 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) [2022-07-13 22:41:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 682 transitions. [2022-07-13 22:41:14,064 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 682 transitions. Word has length 162 [2022-07-13 22:41:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:14,064 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 682 transitions. [2022-07-13 22:41:14,064 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) [2022-07-13 22:41:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 682 transitions. [2022-07-13 22:41:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-13 22:41:14,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:14,066 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] [2022-07-13 22:41:14,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:14,278 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 [2022-07-13 22:41:14,278 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1581626464, now seen corresponding path program 1 times [2022-07-13 22:41:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:14,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16941493] [2022-07-13 22:41:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:41:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:41:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:41:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:41:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:41:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:41:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:41:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:41:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:41:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 22:41:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 22:41:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-13 22:41:14,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:14,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16941493] [2022-07-13 22:41:14,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16941493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:14,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:14,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:41:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850908851] [2022-07-13 22:41:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:41:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:41:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:41:14,469 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) [2022-07-13 22:41:14,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:14,823 INFO L93 Difference]: Finished difference Result 719 states and 822 transitions. [2022-07-13 22:41:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:41:14,824 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 [2022-07-13 22:41:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:14,826 INFO L225 Difference]: With dead ends: 719 [2022-07-13 22:41:14,826 INFO L226 Difference]: Without dead ends: 616 [2022-07-13 22:41:14,826 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 [2022-07-13 22:41:14,827 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 [2022-07-13 22:41:14,827 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] [2022-07-13 22:41:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-07-13 22:41:14,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 606. [2022-07-13 22:41:14,876 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) [2022-07-13 22:41:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 683 transitions. [2022-07-13 22:41:14,878 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 683 transitions. Word has length 173 [2022-07-13 22:41:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:14,879 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 683 transitions. [2022-07-13 22:41:14,879 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) [2022-07-13 22:41:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 683 transitions. [2022-07-13 22:41:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-13 22:41:14,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:14,881 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] [2022-07-13 22:41:14,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:41:14,881 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1346324033, now seen corresponding path program 1 times [2022-07-13 22:41:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:14,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861464496] [2022-07-13 22:41:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:41:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:41:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 22:41:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:41:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:41:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 22:41:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:41:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:41:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:41:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:41:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 22:41:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 22:41:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 22:41:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-13 22:41:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:15,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861464496] [2022-07-13 22:41:15,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861464496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:15,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:15,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:41:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668153058] [2022-07-13 22:41:15,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:41:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:15,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:41:15,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:41:15,165 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) [2022-07-13 22:41:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:15,746 INFO L93 Difference]: Finished difference Result 636 states and 721 transitions. [2022-07-13 22:41:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:41:15,747 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 [2022-07-13 22:41:15,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:15,749 INFO L225 Difference]: With dead ends: 636 [2022-07-13 22:41:15,749 INFO L226 Difference]: Without dead ends: 634 [2022-07-13 22:41:15,750 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 [2022-07-13 22:41:15,750 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 [2022-07-13 22:41:15,750 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] [2022-07-13 22:41:15,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-07-13 22:41:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 617. [2022-07-13 22:41:15,791 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) [2022-07-13 22:41:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 699 transitions. [2022-07-13 22:41:15,793 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 699 transitions. Word has length 171 [2022-07-13 22:41:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:15,793 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 699 transitions. [2022-07-13 22:41:15,793 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) [2022-07-13 22:41:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 699 transitions. [2022-07-13 22:41:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 22:41:15,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:15,796 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] [2022-07-13 22:41:15,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 22:41:15,796 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:15,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1909091545, now seen corresponding path program 1 times [2022-07-13 22:41:15,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:15,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555013617] [2022-07-13 22:41:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:15,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:41:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:41:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:41:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:41:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:41:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:41:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:41:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:41:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:41:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:41:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 22:41:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:41:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-13 22:41:17,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555013617] [2022-07-13 22:41:17,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555013617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:17,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:17,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:41:17,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64430693] [2022-07-13 22:41:17,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:17,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:41:17,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:17,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:41:17,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:41:17,711 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) [2022-07-13 22:41:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:19,013 INFO L93 Difference]: Finished difference Result 644 states and 736 transitions. [2022-07-13 22:41:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:41:19,014 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 [2022-07-13 22:41:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:19,016 INFO L225 Difference]: With dead ends: 644 [2022-07-13 22:41:19,016 INFO L226 Difference]: Without dead ends: 642 [2022-07-13 22:41:19,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:41:19,017 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 258 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:19,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 338 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 22:41:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-07-13 22:41:19,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 623. [2022-07-13 22:41:19,073 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) [2022-07-13 22:41:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 705 transitions. [2022-07-13 22:41:19,074 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 705 transitions. Word has length 168 [2022-07-13 22:41:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:19,075 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 705 transitions. [2022-07-13 22:41:19,075 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) [2022-07-13 22:41:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 705 transitions. [2022-07-13 22:41:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-13 22:41:19,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:19,077 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] [2022-07-13 22:41:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:41:19,078 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -797255900, now seen corresponding path program 1 times [2022-07-13 22:41:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:19,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243433541] [2022-07-13 22:41:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:19,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:41:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:41:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:41:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:41:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:41:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:41:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:41:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:41:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:41:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 22:41:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 22:41:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-13 22:41:19,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:19,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243433541] [2022-07-13 22:41:19,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243433541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:19,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:19,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:41:19,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600134774] [2022-07-13 22:41:19,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:19,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:41:19,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:41:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:41:19,395 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) [2022-07-13 22:41:20,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:20,053 INFO L93 Difference]: Finished difference Result 737 states and 856 transitions. [2022-07-13 22:41:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:41:20,053 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 [2022-07-13 22:41:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:20,056 INFO L225 Difference]: With dead ends: 737 [2022-07-13 22:41:20,056 INFO L226 Difference]: Without dead ends: 625 [2022-07-13 22:41:20,056 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 [2022-07-13 22:41:20,057 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 [2022-07-13 22:41:20,057 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] [2022-07-13 22:41:20,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-07-13 22:41:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 624. [2022-07-13 22:41:20,112 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) [2022-07-13 22:41:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 706 transitions. [2022-07-13 22:41:20,114 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 706 transitions. Word has length 177 [2022-07-13 22:41:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:20,114 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 706 transitions. [2022-07-13 22:41:20,114 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) [2022-07-13 22:41:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 706 transitions. [2022-07-13 22:41:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 22:41:20,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:20,117 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] [2022-07-13 22:41:20,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 22:41:20,117 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash 978298422, now seen corresponding path program 1 times [2022-07-13 22:41:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:20,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555481360] [2022-07-13 22:41:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:20,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:41:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:41:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:41:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:41:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:41:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:41:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:41:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:41:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:41:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:41:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:41:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 22:41:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 20 proven. 32 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-13 22:41:20,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:20,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555481360] [2022-07-13 22:41:20,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555481360] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:20,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503493956] [2022-07-13 22:41:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:20,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:20,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:20,712 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) [2022-07-13 22:41:20,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 22:41:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:21,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-13 22:41:21,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:21,244 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 [2022-07-13 22:41:21,402 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:41:21,402 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 [2022-07-13 22:41:21,407 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 [2022-07-13 22:41:21,718 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:41:21,718 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 [2022-07-13 22:41:21,798 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 [2022-07-13 22:41:23,993 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 [2022-07-13 22:41:24,065 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-13 22:41:24,065 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 [2022-07-13 22:41:24,070 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 [2022-07-13 22:41:36,683 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 [2022-07-13 22:41:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 39 proven. 149 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:41:37,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:41:37,859 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 [2022-07-13 22:41:37,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503493956] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:37,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:41:37,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 33] total 46 [2022-07-13 22:41:37,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046271850] [2022-07-13 22:41:37,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:41:37,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-13 22:41:37,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:37,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-13 22:41:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2557, Unknown=4, NotChecked=102, Total=2862 [2022-07-13 22:41:37,869 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) [2022-07-13 22:41:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:42,136 INFO L93 Difference]: Finished difference Result 799 states and 901 transitions. [2022-07-13 22:41:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-13 22:41:42,137 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 [2022-07-13 22:41:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:42,138 INFO L225 Difference]: With dead ends: 799 [2022-07-13 22:41:42,139 INFO L226 Difference]: Without dead ends: 604 [2022-07-13 22:41:42,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 242 SyntacticMatches, 19 SemanticMatches, 89 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2944 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=696, Invalid=7313, Unknown=5, NotChecked=176, Total=8190 [2022-07-13 22:41:42,141 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 [2022-07-13 22:41:42,141 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] [2022-07-13 22:41:42,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-07-13 22:41:42,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 597. [2022-07-13 22:41:42,194 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) [2022-07-13 22:41:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 672 transitions. [2022-07-13 22:41:42,196 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 672 transitions. Word has length 169 [2022-07-13 22:41:42,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:42,196 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 672 transitions. [2022-07-13 22:41:42,197 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) [2022-07-13 22:41:42,197 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 672 transitions. [2022-07-13 22:41:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 22:41:42,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:42,199 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] [2022-07-13 22:41:42,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-07-13 22:41:42,419 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 [2022-07-13 22:41:42,419 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash -928104844, now seen corresponding path program 2 times [2022-07-13 22:41:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:42,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54349018] [2022-07-13 22:41:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:41:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:41:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:41:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:41:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:41:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:41:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:41:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:41:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:41:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:41:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:41:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 22:41:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-13 22:41:43,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:43,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54349018] [2022-07-13 22:41:43,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54349018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:43,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354230837] [2022-07-13 22:41:43,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:41:43,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:43,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:43,264 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) [2022-07-13 22:41:43,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 22:41:44,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:41:44,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:41:44,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-13 22:41:44,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:44,145 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