./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_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 e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:56:52,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:56:52,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:56:52,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:56:52,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:56:52,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:56:52,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:56:52,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:56:52,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:56:52,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:56:52,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:56:52,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:56:52,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:56:52,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:56:52,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:56:52,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:56:52,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:56:52,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:56:52,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:56:52,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:56:52,746 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:56:52,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:56:52,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:56:52,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:56:52,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:56:52,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:56:52,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:56:52,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:56:52,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:56:52,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:56:52,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:56:52,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:56:52,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:56:52,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:56:52,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:56:52,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:56:52,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:56:52,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:56:52,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:56:52,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:56:52,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:56:52,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:56:52,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:56:52,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:56:52,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:56:52,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:56:52,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:56:52,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:56:52,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:56:52,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:56:52,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:56:52,798 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:56:52,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:56:52,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:56:52,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:56:52,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:56:52,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:56:52,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:56:52,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:56:52,800 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:56:52,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:56:52,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:56:52,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:56:52,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:56:52,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:56:52,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:56:52,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:56:52,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:56:52,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:56:52,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:56:52,802 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:56:52,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:56:52,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:56:52,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 [2022-07-12 10:56:53,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:56:53,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:56:53,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:56:53,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:56:53,085 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:56:53,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2022-07-12 10:56:53,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d255fe316/3f842915e1ab413da96813c1825aeab5/FLAG251e982ab [2022-07-12 10:56:53,860 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:56:53,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2022-07-12 10:56:53,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d255fe316/3f842915e1ab413da96813c1825aeab5/FLAG251e982ab [2022-07-12 10:56:54,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d255fe316/3f842915e1ab413da96813c1825aeab5 [2022-07-12 10:56:54,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:56:54,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:56:54,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:56:54,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:56:54,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:56:54,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:56:54" (1/1) ... [2022-07-12 10:56:54,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d72a5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:54, skipping insertion in model container [2022-07-12 10:56:54,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:56:54" (1/1) ... [2022-07-12 10:56:54,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:56:54,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:56:54,485 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_be16_harness.i[4497,4510] [2022-07-12 10:56:54,490 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_be16_harness.i[4557,4570] [2022-07-12 10:56:55,103 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,104 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,105 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,105 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,106 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,116 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,117 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,118 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,119 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,347 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:56:55,349 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:56:55,350 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:56:55,350 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:56:55,352 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:56:55,352 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:56:55,353 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:56:55,353 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:56:55,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:56:55,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:56:55,456 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:56:55,563 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,564 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:56:55,719 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:56:55,740 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_be16_harness.i[4497,4510] [2022-07-12 10:56:55,741 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_be16_harness.i[4557,4570] [2022-07-12 10:56:55,772 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,772 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,773 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,773 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,774 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,782 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,783 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,784 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,785 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,820 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:56:55,821 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:56:55,821 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:56:55,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:56:55,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:56:55,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:56:55,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:56:55,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:56:55,826 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:56:55,830 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:56:55,847 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:56:55,899 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,899 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:55,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:56:56,112 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:56:56,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56 WrapperNode [2022-07-12 10:56:56,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:56:56,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:56:56,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:56:56,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:56:56,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,270 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 866 [2022-07-12 10:56:56,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:56:56,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:56:56,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:56:56,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:56:56,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:56:56,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:56:56,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:56:56,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:56:56,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (1/1) ... [2022-07-12 10:56:56,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:56:56,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:56,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:56:56,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:56:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure htons [2022-07-12 10:56:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:56:56,455 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:56:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:56:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:56:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:56:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:56:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:56:56,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:56:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:56:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:56:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:56:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:56:56,459 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:56:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:56:56,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:56:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:56:56,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:56:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:56:56,460 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:56:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:56:56,460 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:56:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:56:56,460 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:56:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:56:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:56:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-12 10:56:56,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-12 10:56:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:56:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:56:56,463 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:56:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:56:56,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:56:56,754 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:56:56,757 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:56:57,759 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:56:57,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:56:57,769 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:56:57,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:56:57 BoogieIcfgContainer [2022-07-12 10:56:57,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:56:57,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:56:57,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:56:57,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:56:57,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:56:54" (1/3) ... [2022-07-12 10:56:57,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6037fab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:56:57, skipping insertion in model container [2022-07-12 10:56:57,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:56" (2/3) ... [2022-07-12 10:56:57,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6037fab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:56:57, skipping insertion in model container [2022-07-12 10:56:57,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:56:57" (3/3) ... [2022-07-12 10:56:57,780 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2022-07-12 10:56:57,793 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:56:57,793 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:56:57,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:56:57,864 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@656504aa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e1a02 [2022-07-12 10:56:57,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:56:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 87 states have internal predecessors, (106), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 10:56:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 10:56:57,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:57,879 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] [2022-07-12 10:56:57,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash 239952465, now seen corresponding path program 1 times [2022-07-12 10:56:57,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:57,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344329468] [2022-07-12 10:56:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:57,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:56:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 10:56:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:56:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:56:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:56:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 10:56:58,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:58,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344329468] [2022-07-12 10:56:58,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344329468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:58,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:56:58,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:56:58,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013286206] [2022-07-12 10:56:58,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:58,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:56:58,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:58,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:56:58,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:56:58,657 INFO L87 Difference]: Start difference. First operand has 132 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 87 states have internal predecessors, (106), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:56:58,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:58,889 INFO L93 Difference]: Finished difference Result 260 states and 369 transitions. [2022-07-12 10:56:58,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:56:58,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2022-07-12 10:56:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:58,899 INFO L225 Difference]: With dead ends: 260 [2022-07-12 10:56:58,899 INFO L226 Difference]: Without dead ends: 127 [2022-07-12 10:56:58,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:56:58,914 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 62 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:58,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 191 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:56:58,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-12 10:56:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-07-12 10:56:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 83 states have internal predecessors, (99), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 10:56:58,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2022-07-12 10:56:58,974 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 86 [2022-07-12 10:56:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:58,974 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2022-07-12 10:56:58,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:56:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2022-07-12 10:56:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 10:56:58,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:58,985 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] [2022-07-12 10:56:58,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:56:58,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:58,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:58,986 INFO L85 PathProgramCache]: Analyzing trace with hash 89659733, now seen corresponding path program 1 times [2022-07-12 10:56:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:58,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388173737] [2022-07-12 10:56:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:58,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:56:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 10:56:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:56:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:56:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:56:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:56:59,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:59,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388173737] [2022-07-12 10:56:59,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388173737] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:59,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399127295] [2022-07-12 10:56:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:59,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:59,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:59,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:59,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:56:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:56:59,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 10:57:00,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:00,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399127295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:00,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:00,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-12 10:57:00,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260378659] [2022-07-12 10:57:00,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:00,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:57:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:57:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:57:00,068 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 10:57:00,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:00,265 INFO L93 Difference]: Finished difference Result 232 states and 311 transitions. [2022-07-12 10:57:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:57:00,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 86 [2022-07-12 10:57:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:00,272 INFO L225 Difference]: With dead ends: 232 [2022-07-12 10:57:00,272 INFO L226 Difference]: Without dead ends: 130 [2022-07-12 10:57:00,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:57:00,278 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 195 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:00,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 471 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:57:00,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-12 10:57:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-07-12 10:57:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 86 states have internal predecessors, (101), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2022-07-12 10:57:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2022-07-12 10:57:00,298 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 86 [2022-07-12 10:57:00,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:00,299 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2022-07-12 10:57:00,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 10:57:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2022-07-12 10:57:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 10:57:00,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:00,301 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] [2022-07-12 10:57:00,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:00,502 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 [2022-07-12 10:57:00,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:00,503 INFO L85 PathProgramCache]: Analyzing trace with hash -171255798, now seen corresponding path program 1 times [2022-07-12 10:57:00,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:00,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613325704] [2022-07-12 10:57:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:00,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:57:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:57:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:57:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:57:00,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:00,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613325704] [2022-07-12 10:57:00,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613325704] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:00,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317175802] [2022-07-12 10:57:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:00,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:00,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:00,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:00,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:57:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:01,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:57:01,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 10:57:01,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:01,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317175802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:01,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:01,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-12 10:57:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152551150] [2022-07-12 10:57:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:01,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:57:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:57:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:57:01,464 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:57:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:01,642 INFO L93 Difference]: Finished difference Result 227 states and 302 transitions. [2022-07-12 10:57:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:57:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 92 [2022-07-12 10:57:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:01,645 INFO L225 Difference]: With dead ends: 227 [2022-07-12 10:57:01,645 INFO L226 Difference]: Without dead ends: 130 [2022-07-12 10:57:01,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:57:01,646 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 212 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:01,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 581 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:57:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-12 10:57:01,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-07-12 10:57:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 86 states have internal predecessors, (101), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-12 10:57:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 171 transitions. [2022-07-12 10:57:01,665 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 171 transitions. Word has length 92 [2022-07-12 10:57:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:01,665 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 171 transitions. [2022-07-12 10:57:01,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:57:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 171 transitions. [2022-07-12 10:57:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 10:57:01,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:01,667 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] [2022-07-12 10:57:01,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:01,894 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 [2022-07-12 10:57:01,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:01,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash -358018689, now seen corresponding path program 2 times [2022-07-12 10:57:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:01,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324350160] [2022-07-12 10:57:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:01,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:57:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:57:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:57:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 10:57:02,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:02,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324350160] [2022-07-12 10:57:02,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324350160] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:02,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910059645] [2022-07-12 10:57:02,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:02,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:02,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:02,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:02,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:57:02,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:02,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:02,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 10:57:02,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 10:57:02,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:02,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910059645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:02,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:02,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2022-07-12 10:57:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063950627] [2022-07-12 10:57:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:02,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:57:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:02,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:57:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:57:02,834 INFO L87 Difference]: Start difference. First operand 130 states and 171 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:57:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:02,986 INFO L93 Difference]: Finished difference Result 221 states and 292 transitions. [2022-07-12 10:57:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:57:02,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 98 [2022-07-12 10:57:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:02,989 INFO L225 Difference]: With dead ends: 221 [2022-07-12 10:57:02,989 INFO L226 Difference]: Without dead ends: 127 [2022-07-12 10:57:02,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:57:02,990 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 80 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:02,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 895 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:57:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-12 10:57:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-07-12 10:57:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 83 states have internal predecessors, (98), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 10:57:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2022-07-12 10:57:03,009 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 98 [2022-07-12 10:57:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:03,011 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2022-07-12 10:57:03,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:57:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2022-07-12 10:57:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 10:57:03,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:03,013 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] [2022-07-12 10:57:03,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:03,239 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 [2022-07-12 10:57:03,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:03,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1323939499, now seen corresponding path program 1 times [2022-07-12 10:57:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:03,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128733786] [2022-07-12 10:57:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:57:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:57:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:57:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 10:57:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:03,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128733786] [2022-07-12 10:57:03,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128733786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:03,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:03,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:57:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258408904] [2022-07-12 10:57:03,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:03,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:57:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:57:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:57:03,715 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:57:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:04,290 INFO L93 Difference]: Finished difference Result 139 states and 182 transitions. [2022-07-12 10:57:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2022-07-12 10:57:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:04,292 INFO L225 Difference]: With dead ends: 139 [2022-07-12 10:57:04,293 INFO L226 Difference]: Without dead ends: 137 [2022-07-12 10:57:04,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:57:04,293 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 88 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:04,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 524 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:57:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-12 10:57:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2022-07-12 10:57:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 90 states have internal predecessors, (104), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-12 10:57:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 179 transitions. [2022-07-12 10:57:04,303 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 179 transitions. Word has length 110 [2022-07-12 10:57:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:04,304 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 179 transitions. [2022-07-12 10:57:04,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:57:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 179 transitions. [2022-07-12 10:57:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 10:57:04,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:04,306 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] [2022-07-12 10:57:04,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:57:04,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2136545501, now seen corresponding path program 1 times [2022-07-12 10:57:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:04,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616969028] [2022-07-12 10:57:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:04,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:57:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:57:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:57:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:57:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:04,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616969028] [2022-07-12 10:57:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616969028] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601254221] [2022-07-12 10:57:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:04,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:04,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:04,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:04,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:57:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:05,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:57:05,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-12 10:57:05,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:05,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601254221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:05,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:05,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-07-12 10:57:05,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806482776] [2022-07-12 10:57:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:05,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:57:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:05,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:57:05,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:57:05,436 INFO L87 Difference]: Start difference. First operand 136 states and 179 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:57:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:05,594 INFO L93 Difference]: Finished difference Result 265 states and 368 transitions. [2022-07-12 10:57:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:05,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2022-07-12 10:57:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:05,596 INFO L225 Difference]: With dead ends: 265 [2022-07-12 10:57:05,596 INFO L226 Difference]: Without dead ends: 154 [2022-07-12 10:57:05,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:57:05,597 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 40 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:05,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 560 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-07-12 10:57:05,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-07-12 10:57:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2022-07-12 10:57:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 93 states have (on average 1.1935483870967742) internal successors, (111), 95 states have internal predecessors, (111), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-12 10:57:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2022-07-12 10:57:05,607 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 114 [2022-07-12 10:57:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:05,608 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2022-07-12 10:57:05,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:57:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2022-07-12 10:57:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 10:57:05,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:05,609 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] [2022-07-12 10:57:05,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:05,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:05,835 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:05,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1900256357, now seen corresponding path program 1 times [2022-07-12 10:57:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:05,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190586253] [2022-07-12 10:57:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:57:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:57:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:57:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-12 10:57:06,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:06,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190586253] [2022-07-12 10:57:06,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190586253] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:06,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068265012] [2022-07-12 10:57:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:06,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:06,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:06,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:06,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:57:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 10:57:06,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:06,885 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 [2022-07-12 10:57:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 10:57:07,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:07,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068265012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:07,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:07,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-12 10:57:07,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182370771] [2022-07-12 10:57:07,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:07,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:57:07,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:57:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:57:07,182 INFO L87 Difference]: Start difference. First operand 141 states and 186 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 10:57:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:07,245 INFO L93 Difference]: Finished difference Result 280 states and 371 transitions. [2022-07-12 10:57:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:57:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 114 [2022-07-12 10:57:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:07,247 INFO L225 Difference]: With dead ends: 280 [2022-07-12 10:57:07,247 INFO L226 Difference]: Without dead ends: 160 [2022-07-12 10:57:07,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:57:07,249 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 30 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:07,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 905 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-07-12 10:57:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-12 10:57:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-12 10:57:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-12 10:57:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 209 transitions. [2022-07-12 10:57:07,257 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 209 transitions. Word has length 114 [2022-07-12 10:57:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:07,257 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 209 transitions. [2022-07-12 10:57:07,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 10:57:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 209 transitions. [2022-07-12 10:57:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 10:57:07,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:07,259 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] [2022-07-12 10:57:07,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:07,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:07,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash -333498407, now seen corresponding path program 1 times [2022-07-12 10:57:07,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:07,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781564553] [2022-07-12 10:57:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:57:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:57:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:57:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-12 10:57:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781564553] [2022-07-12 10:57:07,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781564553] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742565508] [2022-07-12 10:57:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:07,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:07,733 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:07,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:57:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:08,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 10:57:08,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:08,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742565508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:08,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:08,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:57:08,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042657709] [2022-07-12 10:57:08,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:08,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:08,207 INFO L87 Difference]: Start difference. First operand 160 states and 209 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:57:08,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:08,241 INFO L93 Difference]: Finished difference Result 289 states and 389 transitions. [2022-07-12 10:57:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:08,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-12 10:57:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:08,243 INFO L225 Difference]: With dead ends: 289 [2022-07-12 10:57:08,243 INFO L226 Difference]: Without dead ends: 169 [2022-07-12 10:57:08,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:57:08,244 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 20 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:08,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 487 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-12 10:57:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-07-12 10:57:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 105 states have internal predecessors, (125), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2022-07-12 10:57:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2022-07-12 10:57:08,253 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 114 [2022-07-12 10:57:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:08,253 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2022-07-12 10:57:08,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:57:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2022-07-12 10:57:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 10:57:08,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:08,254 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:57:08,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:08,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:08,479 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:08,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:08,480 INFO L85 PathProgramCache]: Analyzing trace with hash -320167147, now seen corresponding path program 2 times [2022-07-12 10:57:08,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:08,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800207830] [2022-07-12 10:57:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:08,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:57:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:57:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:57:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:57:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:57:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:57:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 10:57:08,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:08,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800207830] [2022-07-12 10:57:08,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800207830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:08,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381083075] [2022-07-12 10:57:08,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:08,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:08,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:08,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:08,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:57:09,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:09,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:09,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-12 10:57:09,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 10:57:10,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:10,585 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:57:10,585 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 [2022-07-12 10:57:10,593 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-12 10:57:10,594 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 [2022-07-12 10:57:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:57:10,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381083075] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:10,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:10,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2022-07-12 10:57:10,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935250914] [2022-07-12 10:57:10,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:10,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:57:10,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:57:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:57:10,639 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 10:57:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:12,433 INFO L93 Difference]: Finished difference Result 339 states and 463 transitions. [2022-07-12 10:57:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 10:57:12,439 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 118 [2022-07-12 10:57:12,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:12,442 INFO L225 Difference]: With dead ends: 339 [2022-07-12 10:57:12,442 INFO L226 Difference]: Without dead ends: 210 [2022-07-12 10:57:12,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 246 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=432, Invalid=2430, Unknown=0, NotChecked=0, Total=2862 [2022-07-12 10:57:12,451 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 233 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 497 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:12,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 926 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1435 Invalid, 0 Unknown, 497 Unchecked, 1.0s Time] [2022-07-12 10:57:12,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-12 10:57:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 197. [2022-07-12 10:57:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 142 states have (on average 1.204225352112676) internal successors, (171), 145 states have internal predecessors, (171), 38 states have call successors, (38), 14 states have call predecessors, (38), 16 states have return successors, (60), 37 states have call predecessors, (60), 37 states have call successors, (60) [2022-07-12 10:57:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 269 transitions. [2022-07-12 10:57:12,468 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 269 transitions. Word has length 118 [2022-07-12 10:57:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:12,469 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 269 transitions. [2022-07-12 10:57:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 10:57:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 269 transitions. [2022-07-12 10:57:12,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 10:57:12,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:12,473 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:12,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:12,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:12,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash -916454254, now seen corresponding path program 1 times [2022-07-12 10:57:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:12,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306351580] [2022-07-12 10:57:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 10:57:12,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:12,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306351580] [2022-07-12 10:57:12,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306351580] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:12,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959704244] [2022-07-12 10:57:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:12,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:12,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:12,914 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:12,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:57:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:13,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-12 10:57:13,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:13,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959704244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:13,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:13,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:57:13,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314957798] [2022-07-12 10:57:13,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:13,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:13,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:13,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:13,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:13,373 INFO L87 Difference]: Start difference. First operand 197 states and 269 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:57:13,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:13,397 INFO L93 Difference]: Finished difference Result 368 states and 520 transitions. [2022-07-12 10:57:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:13,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-12 10:57:13,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:13,399 INFO L225 Difference]: With dead ends: 368 [2022-07-12 10:57:13,399 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 10:57:13,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:57:13,400 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 9 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 480 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 [2022-07-12 10:57:13,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 480 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 10:57:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2022-07-12 10:57:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 142 states have (on average 1.1901408450704225) internal successors, (169), 145 states have internal predecessors, (169), 38 states have call successors, (38), 14 states have call predecessors, (38), 16 states have return successors, (60), 37 states have call predecessors, (60), 37 states have call successors, (60) [2022-07-12 10:57:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 267 transitions. [2022-07-12 10:57:13,413 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 267 transitions. Word has length 120 [2022-07-12 10:57:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:13,413 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 267 transitions. [2022-07-12 10:57:13,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:57:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 267 transitions. [2022-07-12 10:57:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 10:57:13,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:13,415 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] [2022-07-12 10:57:13,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:13,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 10:57:13,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash -915873842, now seen corresponding path program 1 times [2022-07-12 10:57:13,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:13,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160681087] [2022-07-12 10:57:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 10:57:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:13,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160681087] [2022-07-12 10:57:13,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160681087] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:13,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242644112] [2022-07-12 10:57:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:13,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:13,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:13,809 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:13,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:57:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:14,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-12 10:57:14,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242644112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:14,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:14,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:57:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765407120] [2022-07-12 10:57:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:14,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:14,325 INFO L87 Difference]: Start difference. First operand 197 states and 267 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:57:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:14,348 INFO L93 Difference]: Finished difference Result 355 states and 498 transitions. [2022-07-12 10:57:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:14,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-12 10:57:14,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:14,349 INFO L225 Difference]: With dead ends: 355 [2022-07-12 10:57:14,350 INFO L226 Difference]: Without dead ends: 188 [2022-07-12 10:57:14,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:57:14,351 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 34 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:14,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 478 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:14,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-12 10:57:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 179. [2022-07-12 10:57:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 125 states have (on average 1.16) internal successors, (145), 127 states have internal predecessors, (145), 38 states have call successors, (38), 14 states have call predecessors, (38), 15 states have return successors, (54), 37 states have call predecessors, (54), 37 states have call successors, (54) [2022-07-12 10:57:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-07-12 10:57:14,362 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 120 [2022-07-12 10:57:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:14,362 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-07-12 10:57:14,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:57:14,362 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-07-12 10:57:14,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 10:57:14,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:14,364 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-12 10:57:14,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:14,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:14,592 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:14,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1910567540, now seen corresponding path program 2 times [2022-07-12 10:57:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:14,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169146811] [2022-07-12 10:57:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:14,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:57:15,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169146811] [2022-07-12 10:57:15,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169146811] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847589109] [2022-07-12 10:57:15,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:15,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:15,070 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:15,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 10:57:15,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:15,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:15,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-12 10:57:15,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 10:57:16,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:16,515 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 26 treesize of output 14 [2022-07-12 10:57:16,610 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:57:16,610 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 [2022-07-12 10:57:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:57:16,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847589109] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:16,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:16,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 24 [2022-07-12 10:57:16,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418476143] [2022-07-12 10:57:16,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 10:57:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 10:57:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:57:16,641 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 3 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 10:57:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:18,116 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2022-07-12 10:57:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 10:57:18,116 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 3 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2022-07-12 10:57:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:18,118 INFO L225 Difference]: With dead ends: 297 [2022-07-12 10:57:18,118 INFO L226 Difference]: Without dead ends: 204 [2022-07-12 10:57:18,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 244 SyntacticMatches, 14 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=388, Invalid=1418, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 10:57:18,119 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 219 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:18,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 574 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 861 Invalid, 0 Unknown, 378 Unchecked, 0.7s Time] [2022-07-12 10:57:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-12 10:57:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2022-07-12 10:57:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 143 states have (on average 1.1538461538461537) internal successors, (165), 145 states have internal predecessors, (165), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (65), 40 states have call predecessors, (65), 40 states have call successors, (65) [2022-07-12 10:57:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 271 transitions. [2022-07-12 10:57:18,131 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 271 transitions. Word has length 120 [2022-07-12 10:57:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:18,131 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 271 transitions. [2022-07-12 10:57:18,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 3 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 10:57:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 271 transitions. [2022-07-12 10:57:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 10:57:18,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:18,149 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] [2022-07-12 10:57:18,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:18,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 10:57:18,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:18,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash 537886416, now seen corresponding path program 1 times [2022-07-12 10:57:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:18,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659923688] [2022-07-12 10:57:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:57:18,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:18,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659923688] [2022-07-12 10:57:18,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659923688] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:18,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276705382] [2022-07-12 10:57:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:18,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:18,844 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:18,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 10:57:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-12 10:57:19,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:19,421 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 [2022-07-12 10:57:19,597 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:57:19,598 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 [2022-07-12 10:57:19,601 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 [2022-07-12 10:57:19,649 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:57:19,649 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 [2022-07-12 10:57:19,948 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 9 treesize of output 3 [2022-07-12 10:57:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 55 proven. 58 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:57:20,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:20,887 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:57:20,887 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 [2022-07-12 10:57:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:57:20,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276705382] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:20,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:20,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 12] total 41 [2022-07-12 10:57:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451242535] [2022-07-12 10:57:20,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:20,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-12 10:57:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:20,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-12 10:57:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2022-07-12 10:57:20,963 INFO L87 Difference]: Start difference. First operand 202 states and 271 transitions. Second operand has 41 states, 39 states have (on average 4.17948717948718) internal successors, (163), 38 states have internal predecessors, (163), 11 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) [2022-07-12 10:57:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:25,827 INFO L93 Difference]: Finished difference Result 434 states and 603 transitions. [2022-07-12 10:57:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-07-12 10:57:25,828 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 4.17948717948718) internal successors, (163), 38 states have internal predecessors, (163), 11 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) Word has length 120 [2022-07-12 10:57:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:25,830 INFO L225 Difference]: With dead ends: 434 [2022-07-12 10:57:25,830 INFO L226 Difference]: Without dead ends: 327 [2022-07-12 10:57:25,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 245 SyntacticMatches, 7 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2614 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=877, Invalid=8825, Unknown=0, NotChecked=0, Total=9702 [2022-07-12 10:57:25,834 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 548 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 3858 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 5111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 837 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:25,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1857 Invalid, 5111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3858 Invalid, 0 Unknown, 837 Unchecked, 2.7s Time] [2022-07-12 10:57:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-12 10:57:25,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 253. [2022-07-12 10:57:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 185 states have (on average 1.145945945945946) internal successors, (212), 189 states have internal predecessors, (212), 45 states have call successors, (45), 19 states have call predecessors, (45), 22 states have return successors, (77), 44 states have call predecessors, (77), 44 states have call successors, (77) [2022-07-12 10:57:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 334 transitions. [2022-07-12 10:57:25,855 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 334 transitions. Word has length 120 [2022-07-12 10:57:25,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:25,855 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 334 transitions. [2022-07-12 10:57:25,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 4.17948717948718) internal successors, (163), 38 states have internal predecessors, (163), 11 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) [2022-07-12 10:57:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 334 transitions. [2022-07-12 10:57:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 10:57:25,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:25,857 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:25,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:26,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 10:57:26,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1854789835, now seen corresponding path program 1 times [2022-07-12 10:57:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643040899] [2022-07-12 10:57:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-12 10:57:26,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:26,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643040899] [2022-07-12 10:57:26,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643040899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:26,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:26,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:57:26,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679965656] [2022-07-12 10:57:26,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:26,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:57:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:26,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:57:26,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:57:26,362 INFO L87 Difference]: Start difference. First operand 253 states and 334 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:57:26,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:26,980 INFO L93 Difference]: Finished difference Result 267 states and 355 transitions. [2022-07-12 10:57:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:57:26,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2022-07-12 10:57:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:26,982 INFO L225 Difference]: With dead ends: 267 [2022-07-12 10:57:26,982 INFO L226 Difference]: Without dead ends: 265 [2022-07-12 10:57:26,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:57:26,983 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 94 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:26,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 640 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:57:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-07-12 10:57:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2022-07-12 10:57:26,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 190 states have (on average 1.1421052631578947) internal successors, (217), 195 states have internal predecessors, (217), 45 states have call successors, (45), 19 states have call predecessors, (45), 23 states have return successors, (85), 44 states have call predecessors, (85), 44 states have call successors, (85) [2022-07-12 10:57:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 347 transitions. [2022-07-12 10:57:26,999 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 347 transitions. Word has length 122 [2022-07-12 10:57:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:27,000 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 347 transitions. [2022-07-12 10:57:27,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:57:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 347 transitions. [2022-07-12 10:57:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 10:57:27,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:27,001 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:27,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:57:27,002 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1153725257, now seen corresponding path program 1 times [2022-07-12 10:57:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:27,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877511202] [2022-07-12 10:57:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:27,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 10:57:27,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:27,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877511202] [2022-07-12 10:57:27,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877511202] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:27,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6113407] [2022-07-12 10:57:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:27,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:27,380 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:27,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 10:57:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-12 10:57:27,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:27,901 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 [2022-07-12 10:57:28,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:28,071 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 [2022-07-12 10:57:28,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:28,239 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 [2022-07-12 10:57:28,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:57:28,478 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 10:57:28,479 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 26 treesize of output 1 [2022-07-12 10:57:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 10:57:28,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:28,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6113407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:28,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:28,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-07-12 10:57:28,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235599295] [2022-07-12 10:57:28,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:28,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 10:57:28,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 10:57:28,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2022-07-12 10:57:28,483 INFO L87 Difference]: Start difference. First operand 259 states and 347 transitions. Second operand has 16 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-12 10:57:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:28,719 INFO L93 Difference]: Finished difference Result 516 states and 685 transitions. [2022-07-12 10:57:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:57:28,719 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 122 [2022-07-12 10:57:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:28,721 INFO L225 Difference]: With dead ends: 516 [2022-07-12 10:57:28,721 INFO L226 Difference]: Without dead ends: 361 [2022-07-12 10:57:28,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 124 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:57:28,723 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 47 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:28,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1381 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 170 Invalid, 0 Unknown, 114 Unchecked, 0.2s Time] [2022-07-12 10:57:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-07-12 10:57:28,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 318. [2022-07-12 10:57:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 240 states have (on average 1.1416666666666666) internal successors, (274), 248 states have internal predecessors, (274), 49 states have call successors, (49), 22 states have call predecessors, (49), 28 states have return successors, (96), 47 states have call predecessors, (96), 48 states have call successors, (96) [2022-07-12 10:57:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 419 transitions. [2022-07-12 10:57:28,741 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 419 transitions. Word has length 122 [2022-07-12 10:57:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:28,741 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 419 transitions. [2022-07-12 10:57:28,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-12 10:57:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 419 transitions. [2022-07-12 10:57:28,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 10:57:28,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:28,744 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:28,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:28,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 10:57:28,971 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:28,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1262111093, now seen corresponding path program 1 times [2022-07-12 10:57:28,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:28,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161515926] [2022-07-12 10:57:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:28,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 10:57:29,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:29,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161515926] [2022-07-12 10:57:29,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161515926] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:29,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411154139] [2022-07-12 10:57:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:29,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:29,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:29,307 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:29,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 10:57:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:29,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-12 10:57:29,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:29,975 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 [2022-07-12 10:57:30,377 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-12 10:57:30,377 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 29 treesize of output 13 [2022-07-12 10:57:30,381 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 [2022-07-12 10:57:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 10:57:30,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:30,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411154139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:30,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:30,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 24 [2022-07-12 10:57:30,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766676810] [2022-07-12 10:57:30,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:30,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:57:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:57:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:57:30,434 INFO L87 Difference]: Start difference. First operand 318 states and 419 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 10:57:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:31,029 INFO L93 Difference]: Finished difference Result 558 states and 768 transitions. [2022-07-12 10:57:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:57:31,030 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 122 [2022-07-12 10:57:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:31,032 INFO L225 Difference]: With dead ends: 558 [2022-07-12 10:57:31,032 INFO L226 Difference]: Without dead ends: 358 [2022-07-12 10:57:31,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:57:31,034 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 266 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 411 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:31,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 727 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 584 Invalid, 0 Unknown, 411 Unchecked, 0.5s Time] [2022-07-12 10:57:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-12 10:57:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 322. [2022-07-12 10:57:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 243 states have (on average 1.1358024691358024) internal successors, (276), 251 states have internal predecessors, (276), 49 states have call successors, (49), 23 states have call predecessors, (49), 29 states have return successors, (96), 47 states have call predecessors, (96), 48 states have call successors, (96) [2022-07-12 10:57:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 421 transitions. [2022-07-12 10:57:31,059 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 421 transitions. Word has length 122 [2022-07-12 10:57:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:31,060 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 421 transitions. [2022-07-12 10:57:31,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 10:57:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 421 transitions. [2022-07-12 10:57:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 10:57:31,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:31,062 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-12 10:57:31,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-12 10:57:31,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 10:57:31,279 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1133493491, now seen corresponding path program 1 times [2022-07-12 10:57:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:31,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43390869] [2022-07-12 10:57:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:57:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:57:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:57:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:57:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:57:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-12 10:57:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:31,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43390869] [2022-07-12 10:57:31,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43390869] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:31,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049618539] [2022-07-12 10:57:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:31,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:31,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:31,656 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:31,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 10:57:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:32,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 10:57:32,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:32,251 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-12 10:57:32,252 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 38 treesize of output 18 [2022-07-12 10:57:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-12 10:57:32,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:32,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049618539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:32,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:32,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 17 [2022-07-12 10:57:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315467340] [2022-07-12 10:57:32,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:32,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:57:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:57:32,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:57:32,278 INFO L87 Difference]: Start difference. First operand 322 states and 421 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 10:57:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:32,579 INFO L93 Difference]: Finished difference Result 558 states and 760 transitions. [2022-07-12 10:57:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:57:32,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 131 [2022-07-12 10:57:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:32,581 INFO L225 Difference]: With dead ends: 558 [2022-07-12 10:57:32,581 INFO L226 Difference]: Without dead ends: 355 [2022-07-12 10:57:32,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 149 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:57:32,583 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 87 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:32,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 949 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 229 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-07-12 10:57:32,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-12 10:57:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 322. [2022-07-12 10:57:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 243 states have (on average 1.131687242798354) internal successors, (275), 251 states have internal predecessors, (275), 49 states have call successors, (49), 23 states have call predecessors, (49), 29 states have return successors, (96), 47 states have call predecessors, (96), 48 states have call successors, (96) [2022-07-12 10:57:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 420 transitions. [2022-07-12 10:57:32,604 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 420 transitions. Word has length 131 [2022-07-12 10:57:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:32,604 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 420 transitions. [2022-07-12 10:57:32,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 10:57:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 420 transitions. [2022-07-12 10:57:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 10:57:32,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:32,606 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] [2022-07-12 10:57:32,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:32,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:32,819 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:32,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:32,820 INFO L85 PathProgramCache]: Analyzing trace with hash 190117968, now seen corresponding path program 3 times [2022-07-12 10:57:32,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:32,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790620644] [2022-07-12 10:57:32,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:32,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:57:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:57:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 10:57:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:33,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790620644] [2022-07-12 10:57:33,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790620644] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:33,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174535419] [2022-07-12 10:57:33,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:57:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:33,091 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:33,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 10:57:33,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:57:33,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:33,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:57:33,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 10:57:33,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:33,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174535419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:33,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:33,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-07-12 10:57:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235764152] [2022-07-12 10:57:33,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:33,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:57:33,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:57:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:57:33,898 INFO L87 Difference]: Start difference. First operand 322 states and 420 transitions. Second operand has 11 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:57:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:34,332 INFO L93 Difference]: Finished difference Result 496 states and 654 transitions. [2022-07-12 10:57:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:57:34,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 124 [2022-07-12 10:57:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:34,335 INFO L225 Difference]: With dead ends: 496 [2022-07-12 10:57:34,335 INFO L226 Difference]: Without dead ends: 343 [2022-07-12 10:57:34,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:57:34,336 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 99 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1196 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 312 Invalid, 0 Unknown, 54 Unchecked, 0.3s Time] [2022-07-12 10:57:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-12 10:57:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 322. [2022-07-12 10:57:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 243 states have (on average 1.123456790123457) internal successors, (273), 251 states have internal predecessors, (273), 49 states have call successors, (49), 23 states have call predecessors, (49), 29 states have return successors, (96), 47 states have call predecessors, (96), 48 states have call successors, (96) [2022-07-12 10:57:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 418 transitions. [2022-07-12 10:57:34,356 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 418 transitions. Word has length 124 [2022-07-12 10:57:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:34,357 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 418 transitions. [2022-07-12 10:57:34,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:57:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 418 transitions. [2022-07-12 10:57:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:34,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:34,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:34,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:34,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 10:57:34,576 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1753224197, now seen corresponding path program 1 times [2022-07-12 10:57:34,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:34,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748702761] [2022-07-12 10:57:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:57:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-12 10:57:34,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:34,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748702761] [2022-07-12 10:57:34,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748702761] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:34,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521900770] [2022-07-12 10:57:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:34,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:34,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:34,879 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:34,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 10:57:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:35,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 97 conjunts are in the unsatisfiable core [2022-07-12 10:57:35,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:35,337 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 [2022-07-12 10:57:35,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:35,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:35,721 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-07-12 10:57:35,722 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 2 case distinctions, treesize of input 33 treesize of output 43 [2022-07-12 10:57:36,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:36,252 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:57:36,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 29 [2022-07-12 10:57:36,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:57:36,599 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 10:57:36,599 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 32 treesize of output 1 [2022-07-12 10:57:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 97 proven. 45 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 10:57:36,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:38,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521900770] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:38,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:57:38,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24] total 32 [2022-07-12 10:57:38,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069397087] [2022-07-12 10:57:38,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:38,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-12 10:57:38,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:38,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-12 10:57:38,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1362, Unknown=1, NotChecked=0, Total=1482 [2022-07-12 10:57:38,445 INFO L87 Difference]: Start difference. First operand 322 states and 418 transitions. Second operand has 32 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 11 states have call successors, (26), 7 states have call predecessors, (26), 9 states have return successors, (23), 7 states have call predecessors, (23), 10 states have call successors, (23) [2022-07-12 10:57:41,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:41,258 INFO L93 Difference]: Finished difference Result 667 states and 887 transitions. [2022-07-12 10:57:41,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-12 10:57:41,259 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 11 states have call successors, (26), 7 states have call predecessors, (26), 9 states have return successors, (23), 7 states have call predecessors, (23), 10 states have call successors, (23) Word has length 130 [2022-07-12 10:57:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:41,263 INFO L225 Difference]: With dead ends: 667 [2022-07-12 10:57:41,263 INFO L226 Difference]: Without dead ends: 405 [2022-07-12 10:57:41,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=433, Invalid=5572, Unknown=1, NotChecked=0, Total=6006 [2022-07-12 10:57:41,266 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 201 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 2935 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 4332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1299 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:41,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1798 Invalid, 4332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2935 Invalid, 0 Unknown, 1299 Unchecked, 1.6s Time] [2022-07-12 10:57:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-12 10:57:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 321. [2022-07-12 10:57:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 240 states have (on average 1.1208333333333333) internal successors, (269), 245 states have internal predecessors, (269), 54 states have call successors, (54), 24 states have call predecessors, (54), 26 states have return successors, (81), 51 states have call predecessors, (81), 53 states have call successors, (81) [2022-07-12 10:57:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 404 transitions. [2022-07-12 10:57:41,296 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 404 transitions. Word has length 130 [2022-07-12 10:57:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:41,296 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 404 transitions. [2022-07-12 10:57:41,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 11 states have call successors, (26), 7 states have call predecessors, (26), 9 states have return successors, (23), 7 states have call predecessors, (23), 10 states have call successors, (23) [2022-07-12 10:57:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 404 transitions. [2022-07-12 10:57:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:41,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:41,298 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-12 10:57:41,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:41,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:41,518 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:41,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1111105743, now seen corresponding path program 1 times [2022-07-12 10:57:41,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:41,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131429425] [2022-07-12 10:57:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:41,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-12 10:57:41,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:41,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131429425] [2022-07-12 10:57:41,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131429425] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:41,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440576936] [2022-07-12 10:57:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:41,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:41,794 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:41,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 10:57:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:42,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-12 10:57:42,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:42,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:57:42,378 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:57:42,378 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 [2022-07-12 10:57:42,700 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-12 10:57:42,700 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 [2022-07-12 10:57:42,751 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:57:42,752 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 [2022-07-12 10:57:42,758 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 [2022-07-12 10:57:42,767 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:57:42,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:57:42,979 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 [2022-07-12 10:57:43,263 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 10:57:43,263 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 29 treesize of output 1 [2022-07-12 10:57:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 103 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 10:57:43,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:43,528 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1690 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be16_~#x#1.base| v_ArrVal_1690) |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.offset|) 18446744073709551616) 0)) is different from false [2022-07-12 10:57:43,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440576936] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:43,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:57:43,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19] total 27 [2022-07-12 10:57:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568964887] [2022-07-12 10:57:43,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:43,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:57:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:57:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=962, Unknown=1, NotChecked=62, Total=1122 [2022-07-12 10:57:43,536 INFO L87 Difference]: Start difference. First operand 321 states and 404 transitions. Second operand has 27 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 9 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2022-07-12 10:57:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:45,348 INFO L93 Difference]: Finished difference Result 613 states and 790 transitions. [2022-07-12 10:57:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-12 10:57:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 9 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) Word has length 130 [2022-07-12 10:57:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:45,352 INFO L225 Difference]: With dead ends: 613 [2022-07-12 10:57:45,352 INFO L226 Difference]: Without dead ends: 353 [2022-07-12 10:57:45,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 178 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=372, Invalid=4053, Unknown=1, NotChecked=130, Total=4556 [2022-07-12 10:57:45,355 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 124 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 3686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1829 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:45,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1298 Invalid, 3686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1770 Invalid, 0 Unknown, 1829 Unchecked, 1.0s Time] [2022-07-12 10:57:45,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-12 10:57:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 324. [2022-07-12 10:57:45,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 237 states have (on average 1.109704641350211) internal successors, (263), 241 states have internal predecessors, (263), 59 states have call successors, (59), 25 states have call predecessors, (59), 27 states have return successors, (85), 57 states have call predecessors, (85), 58 states have call successors, (85) [2022-07-12 10:57:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 407 transitions. [2022-07-12 10:57:45,378 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 407 transitions. Word has length 130 [2022-07-12 10:57:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:45,379 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 407 transitions. [2022-07-12 10:57:45,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 9 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2022-07-12 10:57:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 407 transitions. [2022-07-12 10:57:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 10:57:45,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:45,380 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] [2022-07-12 10:57:45,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:45,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1186127173, now seen corresponding path program 4 times [2022-07-12 10:57:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:45,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397656279] [2022-07-12 10:57:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:57:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:57:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 10:57:45,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:45,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397656279] [2022-07-12 10:57:45,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397656279] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:45,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114200680] [2022-07-12 10:57:45,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 10:57:45,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:45,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:45,978 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:46,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 10:57:46,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 10:57:46,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:46,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-12 10:57:46,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:46,480 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 [2022-07-12 10:57:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:46,654 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 [2022-07-12 10:57:46,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:46,807 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 [2022-07-12 10:57:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 10:57:47,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:48,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114200680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:48,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:57:48,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 24 [2022-07-12 10:57:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554913351] [2022-07-12 10:57:48,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:48,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 10:57:48,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:48,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 10:57:48,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=836, Unknown=1, NotChecked=0, Total=930 [2022-07-12 10:57:48,803 INFO L87 Difference]: Start difference. First operand 324 states and 407 transitions. Second operand has 24 states, 22 states have (on average 6.136363636363637) internal successors, (135), 21 states have internal predecessors, (135), 10 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2022-07-12 10:57:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:50,820 INFO L93 Difference]: Finished difference Result 548 states and 733 transitions. [2022-07-12 10:57:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-12 10:57:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 6.136363636363637) internal successors, (135), 21 states have internal predecessors, (135), 10 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) Word has length 126 [2022-07-12 10:57:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:50,823 INFO L225 Difference]: With dead ends: 548 [2022-07-12 10:57:50,823 INFO L226 Difference]: Without dead ends: 422 [2022-07-12 10:57:50,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 177 SyntacticMatches, 15 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=428, Invalid=3231, Unknown=1, NotChecked=0, Total=3660 [2022-07-12 10:57:50,826 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 267 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 486 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:50,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1084 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1890 Invalid, 0 Unknown, 486 Unchecked, 1.1s Time] [2022-07-12 10:57:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-12 10:57:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 380. [2022-07-12 10:57:50,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 277 states have (on average 1.108303249097473) internal successors, (307), 283 states have internal predecessors, (307), 70 states have call successors, (70), 27 states have call predecessors, (70), 32 states have return successors, (109), 69 states have call predecessors, (109), 69 states have call successors, (109) [2022-07-12 10:57:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 486 transitions. [2022-07-12 10:57:50,854 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 486 transitions. Word has length 126 [2022-07-12 10:57:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:50,854 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 486 transitions. [2022-07-12 10:57:50,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 6.136363636363637) internal successors, (135), 21 states have internal predecessors, (135), 10 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2022-07-12 10:57:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 486 transitions. [2022-07-12 10:57:50,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 10:57:50,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:50,856 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] [2022-07-12 10:57:50,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:51,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:51,079 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:51,080 INFO L85 PathProgramCache]: Analyzing trace with hash -967272455, now seen corresponding path program 1 times [2022-07-12 10:57:51,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:51,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700530795] [2022-07-12 10:57:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:51,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:57:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:57:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:57:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-12 10:57:51,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:51,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700530795] [2022-07-12 10:57:51,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700530795] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:51,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221532472] [2022-07-12 10:57:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:51,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:51,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:51,629 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:51,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 10:57:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-12 10:57:52,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:52,279 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 [2022-07-12 10:57:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:56,429 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 [2022-07-12 10:57:58,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:57:58,590 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 10:57:58,590 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 26 treesize of output 1 [2022-07-12 10:57:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 10:57:58,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:58,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221532472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:58,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:58,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 24 [2022-07-12 10:57:58,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963675872] [2022-07-12 10:57:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:57:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:57:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=471, Unknown=1, NotChecked=0, Total=552 [2022-07-12 10:57:58,596 INFO L87 Difference]: Start difference. First operand 380 states and 486 transitions. Second operand has 13 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 10:57:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:58,672 INFO L93 Difference]: Finished difference Result 552 states and 682 transitions. [2022-07-12 10:57:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:57:58,672 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 126 [2022-07-12 10:57:58,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:58,675 INFO L225 Difference]: With dead ends: 552 [2022-07-12 10:57:58,675 INFO L226 Difference]: Without dead ends: 360 [2022-07-12 10:57:58,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=92, Invalid=557, Unknown=1, NotChecked=0, Total=650 [2022-07-12 10:57:58,676 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 23 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:58,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 808 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 50 Unchecked, 0.0s Time] [2022-07-12 10:57:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-12 10:57:58,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 358. [2022-07-12 10:57:58,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 265 states have (on average 1.109433962264151) internal successors, (294), 270 states have internal predecessors, (294), 62 states have call successors, (62), 26 states have call predecessors, (62), 30 states have return successors, (95), 61 states have call predecessors, (95), 61 states have call successors, (95) [2022-07-12 10:57:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 451 transitions. [2022-07-12 10:57:58,702 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 451 transitions. Word has length 126 [2022-07-12 10:57:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:58,703 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 451 transitions. [2022-07-12 10:57:58,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 10:57:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 451 transitions. [2022-07-12 10:57:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 10:57:58,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:58,705 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:58,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:58,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:58,919 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:58,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:58,920 INFO L85 PathProgramCache]: Analyzing trace with hash 669863258, now seen corresponding path program 1 times [2022-07-12 10:57:58,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:58,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986928511] [2022-07-12 10:57:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:58,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:57:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:57:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:57:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:57:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 10:57:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-12 10:57:59,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:59,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986928511] [2022-07-12 10:57:59,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986928511] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:59,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922904835] [2022-07-12 10:57:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:59,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:59,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:59,540 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) [2022-07-12 10:57:59,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 10:58:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:00,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-12 10:58:00,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:00,133 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 [2022-07-12 10:58:04,305 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:04,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 10:58:04,344 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:04,344 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 [2022-07-12 10:58:04,348 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 [2022-07-12 10:58:04,448 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:04,449 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 [2022-07-12 10:58:04,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:04,505 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 34 treesize of output 33 [2022-07-12 10:58:04,518 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:58:04,518 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 38 treesize of output 56 [2022-07-12 10:58:04,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-12 10:58:04,889 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 18 treesize of output 20 [2022-07-12 10:58:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 53 proven. 86 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:58:05,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:05,923 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2004 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be16_~#x#1.base| v_ArrVal_2004) |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.offset| 16)) 18446744073709551616) 0)) is different from false [2022-07-12 10:58:05,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922904835] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:05,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:58:05,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 27] total 43 [2022-07-12 10:58:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286030967] [2022-07-12 10:58:05,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-12 10:58:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-12 10:58:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2199, Unknown=2, NotChecked=94, Total=2450 [2022-07-12 10:58:05,931 INFO L87 Difference]: Start difference. First operand 358 states and 451 transitions. Second operand has 43 states, 39 states have (on average 3.641025641025641) internal successors, (142), 38 states have internal predecessors, (142), 17 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 14 states have call predecessors, (26), 15 states have call successors, (26) [2022-07-12 10:58:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:11,754 INFO L93 Difference]: Finished difference Result 622 states and 808 transitions. [2022-07-12 10:58:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 10:58:11,755 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 3.641025641025641) internal successors, (142), 38 states have internal predecessors, (142), 17 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 14 states have call predecessors, (26), 15 states have call successors, (26) Word has length 129 [2022-07-12 10:58:11,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:11,756 INFO L225 Difference]: With dead ends: 622 [2022-07-12 10:58:11,756 INFO L226 Difference]: Without dead ends: 441 [2022-07-12 10:58:11,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 173 SyntacticMatches, 15 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=480, Invalid=6001, Unknown=3, NotChecked=158, Total=6642 [2022-07-12 10:58:11,759 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 246 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 4817 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 6419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 4817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1452 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:11,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2089 Invalid, 6419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 4817 Invalid, 0 Unknown, 1452 Unchecked, 2.6s Time] [2022-07-12 10:58:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-12 10:58:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 384. [2022-07-12 10:58:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 285 states have (on average 1.0947368421052632) internal successors, (312), 295 states have internal predecessors, (312), 63 states have call successors, (63), 27 states have call predecessors, (63), 35 states have return successors, (97), 61 states have call predecessors, (97), 62 states have call successors, (97) [2022-07-12 10:58:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 472 transitions. [2022-07-12 10:58:11,788 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 472 transitions. Word has length 129 [2022-07-12 10:58:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:11,788 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 472 transitions. [2022-07-12 10:58:11,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 3.641025641025641) internal successors, (142), 38 states have internal predecessors, (142), 17 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 14 states have call predecessors, (26), 15 states have call successors, (26) [2022-07-12 10:58:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 472 transitions. [2022-07-12 10:58:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 10:58:11,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:11,790 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] [2022-07-12 10:58:11,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:12,015 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,SelfDestructingSolverStorable22 [2022-07-12 10:58:12,015 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:12,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1028245912, now seen corresponding path program 1 times [2022-07-12 10:58:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:12,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468434036] [2022-07-12 10:58:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 10:58:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 10:58:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:12,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468434036] [2022-07-12 10:58:12,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468434036] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:12,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452275051] [2022-07-12 10:58:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:12,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:12,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:12,937 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) [2022-07-12 10:58:12,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 10:58:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:13,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-12 10:58:13,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:13,604 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:13,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-12 10:58:13,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-12 10:58:13,659 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:13,660 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 23 treesize of output 29 [2022-07-12 10:58:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 68 proven. 50 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 10:58:14,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 10:58:14,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452275051] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:14,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:14,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 9] total 33 [2022-07-12 10:58:14,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285864003] [2022-07-12 10:58:14,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:14,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 10:58:14,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:14,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 10:58:14,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 10:58:14,340 INFO L87 Difference]: Start difference. First operand 384 states and 472 transitions. Second operand has 33 states, 32 states have (on average 4.8125) internal successors, (154), 31 states have internal predecessors, (154), 9 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-07-12 10:58:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:15,882 INFO L93 Difference]: Finished difference Result 537 states and 648 transitions. [2022-07-12 10:58:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:58:15,883 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.8125) internal successors, (154), 31 states have internal predecessors, (154), 9 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 132 [2022-07-12 10:58:15,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:15,885 INFO L225 Difference]: With dead ends: 537 [2022-07-12 10:58:15,885 INFO L226 Difference]: Without dead ends: 401 [2022-07-12 10:58:15,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=359, Invalid=2397, Unknown=0, NotChecked=0, Total=2756 [2022-07-12 10:58:15,887 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 316 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 524 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:15,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 833 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1947 Invalid, 0 Unknown, 524 Unchecked, 1.1s Time] [2022-07-12 10:58:15,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-07-12 10:58:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 379. [2022-07-12 10:58:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 281 states have (on average 1.092526690391459) internal successors, (307), 288 states have internal predecessors, (307), 63 states have call successors, (63), 29 states have call predecessors, (63), 34 states have return successors, (83), 61 states have call predecessors, (83), 62 states have call successors, (83) [2022-07-12 10:58:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 453 transitions. [2022-07-12 10:58:15,915 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 453 transitions. Word has length 132 [2022-07-12 10:58:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:15,916 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 453 transitions. [2022-07-12 10:58:15,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.8125) internal successors, (154), 31 states have internal predecessors, (154), 9 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-07-12 10:58:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 453 transitions. [2022-07-12 10:58:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 10:58:15,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:15,917 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] [2022-07-12 10:58:15,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:16,144 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,SelfDestructingSolverStorable23 [2022-07-12 10:58:16,144 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash 140344366, now seen corresponding path program 1 times [2022-07-12 10:58:16,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:16,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865924516] [2022-07-12 10:58:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 10:58:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 10:58:16,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:16,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865924516] [2022-07-12 10:58:16,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865924516] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:16,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788937935] [2022-07-12 10:58:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:16,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:16,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:16,560 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) [2022-07-12 10:58:16,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 10:58:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:17,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-12 10:58:17,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:17,286 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:17,286 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 [2022-07-12 10:58:17,291 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 [2022-07-12 10:58:17,363 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-12 10:58:17,366 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 [2022-07-12 10:58:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 79 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 10:58:17,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 10:58:18,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788937935] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:18,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:18,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 12] total 36 [2022-07-12 10:58:18,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703675105] [2022-07-12 10:58:18,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:18,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-12 10:58:18,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-12 10:58:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 10:58:18,691 INFO L87 Difference]: Start difference. First operand 379 states and 453 transitions. Second operand has 36 states, 34 states have (on average 4.088235294117647) internal successors, (139), 34 states have internal predecessors, (139), 10 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2022-07-12 10:58:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:21,805 INFO L93 Difference]: Finished difference Result 519 states and 634 transitions. [2022-07-12 10:58:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:58:21,806 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 4.088235294117647) internal successors, (139), 34 states have internal predecessors, (139), 10 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 132 [2022-07-12 10:58:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:21,808 INFO L225 Difference]: With dead ends: 519 [2022-07-12 10:58:21,808 INFO L226 Difference]: Without dead ends: 422 [2022-07-12 10:58:21,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 260 SyntacticMatches, 13 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=571, Invalid=3851, Unknown=0, NotChecked=0, Total=4422 [2022-07-12 10:58:21,810 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 283 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 3001 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 4126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 3001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 920 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:21,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 907 Invalid, 4126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 3001 Invalid, 0 Unknown, 920 Unchecked, 1.9s Time] [2022-07-12 10:58:21,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-12 10:58:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 388. [2022-07-12 10:58:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 286 states have (on average 1.0874125874125875) internal successors, (311), 293 states have internal predecessors, (311), 66 states have call successors, (66), 30 states have call predecessors, (66), 35 states have return successors, (89), 64 states have call predecessors, (89), 65 states have call successors, (89) [2022-07-12 10:58:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 466 transitions. [2022-07-12 10:58:21,841 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 466 transitions. Word has length 132 [2022-07-12 10:58:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:21,841 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 466 transitions. [2022-07-12 10:58:21,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 4.088235294117647) internal successors, (139), 34 states have internal predecessors, (139), 10 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2022-07-12 10:58:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 466 transitions. [2022-07-12 10:58:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 10:58:21,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:21,843 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:58:21,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:22,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:22,059 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 398509804, now seen corresponding path program 1 times [2022-07-12 10:58:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:22,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864773293] [2022-07-12 10:58:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 10:58:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-12 10:58:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:22,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864773293] [2022-07-12 10:58:22,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864773293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:22,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:22,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:58:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074456480] [2022-07-12 10:58:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:22,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:58:22,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:58:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:58:22,280 INFO L87 Difference]: Start difference. First operand 388 states and 466 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:58:22,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:22,722 INFO L93 Difference]: Finished difference Result 491 states and 600 transitions. [2022-07-12 10:58:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:58:22,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 132 [2022-07-12 10:58:22,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:22,725 INFO L225 Difference]: With dead ends: 491 [2022-07-12 10:58:22,726 INFO L226 Difference]: Without dead ends: 384 [2022-07-12 10:58:22,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:58:22,727 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 83 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:22,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:58:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-12 10:58:22,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2022-07-12 10:58:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 282 states have (on average 1.0815602836879432) internal successors, (305), 289 states have internal predecessors, (305), 66 states have call successors, (66), 30 states have call predecessors, (66), 35 states have return successors, (89), 64 states have call predecessors, (89), 65 states have call successors, (89) [2022-07-12 10:58:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 460 transitions. [2022-07-12 10:58:22,783 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 460 transitions. Word has length 132 [2022-07-12 10:58:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:22,784 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 460 transitions. [2022-07-12 10:58:22,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:58:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 460 transitions. [2022-07-12 10:58:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 10:58:22,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:22,785 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] [2022-07-12 10:58:22,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:58:22,785 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:22,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash -939545963, now seen corresponding path program 1 times [2022-07-12 10:58:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:22,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333887530] [2022-07-12 10:58:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:22,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 10:58:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 7 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-12 10:58:23,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:23,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333887530] [2022-07-12 10:58:23,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333887530] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:23,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703759108] [2022-07-12 10:58:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:23,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:23,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:23,176 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) [2022-07-12 10:58:23,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 10:58:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:23,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 101 conjunts are in the unsatisfiable core [2022-07-12 10:58:23,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:23,667 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 [2022-07-12 10:58:24,014 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:24,015 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 [2022-07-12 10:58:24,018 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 [2022-07-12 10:58:24,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 10:58:24,085 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:24,085 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 [2022-07-12 10:58:24,893 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 10:58:24,894 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 [2022-07-12 10:58:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:58:24,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 10:58:25,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703759108] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:25,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:25,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 32, 16] total 51 [2022-07-12 10:58:25,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386297218] [2022-07-12 10:58:26,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-12 10:58:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-12 10:58:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2378, Unknown=0, NotChecked=0, Total=2550 [2022-07-12 10:58:26,002 INFO L87 Difference]: Start difference. First operand 384 states and 460 transitions. Second operand has 51 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 45 states have internal predecessors, (166), 13 states have call successors, (31), 7 states have call predecessors, (31), 10 states have return successors, (27), 12 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-12 10:58:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:29,153 INFO L93 Difference]: Finished difference Result 517 states and 634 transitions. [2022-07-12 10:58:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-12 10:58:29,154 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 45 states have internal predecessors, (166), 13 states have call successors, (31), 7 states have call predecessors, (31), 10 states have return successors, (27), 12 states have call predecessors, (27), 10 states have call successors, (27) Word has length 134 [2022-07-12 10:58:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:29,156 INFO L225 Difference]: With dead ends: 517 [2022-07-12 10:58:29,156 INFO L226 Difference]: Without dead ends: 421 [2022-07-12 10:58:29,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 252 SyntacticMatches, 7 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2163 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=480, Invalid=7352, Unknown=0, NotChecked=0, Total=7832 [2022-07-12 10:58:29,158 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 233 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 3508 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 5480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 3508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1728 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:29,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2163 Invalid, 5480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 3508 Invalid, 0 Unknown, 1728 Unchecked, 2.0s Time] [2022-07-12 10:58:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-07-12 10:58:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 376. [2022-07-12 10:58:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 277 states have (on average 1.0794223826714802) internal successors, (299), 283 states have internal predecessors, (299), 64 states have call successors, (64), 30 states have call predecessors, (64), 34 states have return successors, (84), 62 states have call predecessors, (84), 63 states have call successors, (84) [2022-07-12 10:58:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 447 transitions. [2022-07-12 10:58:29,194 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 447 transitions. Word has length 134 [2022-07-12 10:58:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:29,194 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 447 transitions. [2022-07-12 10:58:29,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 45 states have internal predecessors, (166), 13 states have call successors, (31), 7 states have call predecessors, (31), 10 states have return successors, (27), 12 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-12 10:58:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 447 transitions. [2022-07-12 10:58:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 10:58:29,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:29,196 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-12 10:58:29,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:29,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:29,414 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash -244161129, now seen corresponding path program 1 times [2022-07-12 10:58:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169669044] [2022-07-12 10:58:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:58:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:58:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:58:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:58:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 10:58:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-12 10:58:29,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:29,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169669044] [2022-07-12 10:58:29,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169669044] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:29,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174805230] [2022-07-12 10:58:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:29,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:29,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:29,940 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) [2022-07-12 10:58:29,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-12 10:58:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:30,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 118 conjunts are in the unsatisfiable core [2022-07-12 10:58:30,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:30,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:58:30,625 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:58:30,626 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 [2022-07-12 10:58:30,633 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 [2022-07-12 10:58:30,897 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:58:30,898 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 15 treesize of output 15 [2022-07-12 10:58:30,946 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 [2022-07-12 10:58:35,041 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 [2022-07-12 10:58:35,085 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:35,086 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 [2022-07-12 10:58:35,092 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 [2022-07-12 10:58:35,340 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 0 case distinctions, treesize of input 27 treesize of output 22 [2022-07-12 10:58:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 42 proven. 126 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 10:58:48,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 10:58:48,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174805230] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:48,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:48,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 33, 11] total 51 [2022-07-12 10:58:48,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693290833] [2022-07-12 10:58:48,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:48,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-12 10:58:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-12 10:58:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2364, Unknown=4, NotChecked=0, Total=2550 [2022-07-12 10:58:48,991 INFO L87 Difference]: Start difference. First operand 376 states and 447 transitions. Second operand has 51 states, 47 states have (on average 4.0638297872340425) internal successors, (191), 47 states have internal predecessors, (191), 17 states have call successors, (42), 10 states have call predecessors, (42), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2022-07-12 10:58:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:51,941 INFO L93 Difference]: Finished difference Result 567 states and 685 transitions. [2022-07-12 10:58:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-12 10:58:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 4.0638297872340425) internal successors, (191), 47 states have internal predecessors, (191), 17 states have call successors, (42), 10 states have call predecessors, (42), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) Word has length 139 [2022-07-12 10:58:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:51,943 INFO L225 Difference]: With dead ends: 567 [2022-07-12 10:58:51,944 INFO L226 Difference]: Without dead ends: 402 [2022-07-12 10:58:51,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 265 SyntacticMatches, 15 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=526, Invalid=6610, Unknown=4, NotChecked=0, Total=7140 [2022-07-12 10:58:51,945 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 231 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 4554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1256 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:51,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1500 Invalid, 4554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 3160 Invalid, 0 Unknown, 1256 Unchecked, 1.7s Time] [2022-07-12 10:58:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-07-12 10:58:51,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 341. [2022-07-12 10:58:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.084) internal successors, (271), 253 states have internal predecessors, (271), 60 states have call successors, (60), 28 states have call predecessors, (60), 30 states have return successors, (73), 59 states have call predecessors, (73), 59 states have call successors, (73) [2022-07-12 10:58:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 404 transitions. [2022-07-12 10:58:51,975 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 404 transitions. Word has length 139 [2022-07-12 10:58:51,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:51,975 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 404 transitions. [2022-07-12 10:58:51,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 4.0638297872340425) internal successors, (191), 47 states have internal predecessors, (191), 17 states have call successors, (42), 10 states have call predecessors, (42), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2022-07-12 10:58:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 404 transitions. [2022-07-12 10:58:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 10:58:51,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:51,977 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-12 10:58:52,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:52,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 10:58:52,191 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:52,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:52,192 INFO L85 PathProgramCache]: Analyzing trace with hash 826318588, now seen corresponding path program 1 times [2022-07-12 10:58:52,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:52,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294962139] [2022-07-12 10:58:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:52,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:52,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:58:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:58:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:58:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:58:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 10:58:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-12 10:58:53,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:53,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294962139] [2022-07-12 10:58:53,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294962139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:53,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:53,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-12 10:58:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233776864] [2022-07-12 10:58:53,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:53,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 10:58:53,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 10:58:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:58:53,242 INFO L87 Difference]: Start difference. First operand 341 states and 404 transitions. Second operand has 24 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 19 states have internal predecessors, (63), 9 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-12 10:58:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:54,878 INFO L93 Difference]: Finished difference Result 379 states and 459 transitions. [2022-07-12 10:58:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:58:54,879 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 19 states have internal predecessors, (63), 9 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) Word has length 141 [2022-07-12 10:58:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:54,880 INFO L225 Difference]: With dead ends: 379 [2022-07-12 10:58:54,880 INFO L226 Difference]: Without dead ends: 377 [2022-07-12 10:58:54,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-07-12 10:58:54,881 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 150 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:54,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 646 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 10:58:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-12 10:58:54,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 345. [2022-07-12 10:58:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 253 states have (on average 1.08300395256917) internal successors, (274), 256 states have internal predecessors, (274), 60 states have call successors, (60), 29 states have call predecessors, (60), 31 states have return successors, (73), 59 states have call predecessors, (73), 59 states have call successors, (73) [2022-07-12 10:58:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 407 transitions. [2022-07-12 10:58:54,907 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 407 transitions. Word has length 141 [2022-07-12 10:58:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:54,907 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 407 transitions. [2022-07-12 10:58:54,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 19 states have internal predecessors, (63), 9 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-12 10:58:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 407 transitions. [2022-07-12 10:58:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 10:58:54,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:54,909 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] [2022-07-12 10:58:54,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:58:54,909 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:54,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1914625920, now seen corresponding path program 1 times [2022-07-12 10:58:54,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:54,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706034154] [2022-07-12 10:58:54,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:54,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:58:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:58:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:58:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:58:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 10:58:55,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:55,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706034154] [2022-07-12 10:58:55,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706034154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:55,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:55,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:58:55,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217122293] [2022-07-12 10:58:55,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:55,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:58:55,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:55,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:58:55,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:58:55,104 INFO L87 Difference]: Start difference. First operand 345 states and 407 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:58:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:55,539 INFO L93 Difference]: Finished difference Result 428 states and 511 transitions. [2022-07-12 10:58:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:58:55,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 145 [2022-07-12 10:58:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:55,542 INFO L225 Difference]: With dead ends: 428 [2022-07-12 10:58:55,542 INFO L226 Difference]: Without dead ends: 377 [2022-07-12 10:58:55,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:58:55,543 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 136 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:55,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 387 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:58:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-12 10:58:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 352. [2022-07-12 10:58:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 258 states have (on average 1.0813953488372092) internal successors, (279), 262 states have internal predecessors, (279), 60 states have call successors, (60), 29 states have call predecessors, (60), 33 states have return successors, (75), 60 states have call predecessors, (75), 59 states have call successors, (75) [2022-07-12 10:58:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 414 transitions. [2022-07-12 10:58:55,575 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 414 transitions. Word has length 145 [2022-07-12 10:58:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:55,575 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 414 transitions. [2022-07-12 10:58:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:58:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 414 transitions. [2022-07-12 10:58:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 10:58:55,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:55,577 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] [2022-07-12 10:58:55,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:58:55,577 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash -623700775, now seen corresponding path program 1 times [2022-07-12 10:58:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167640915] [2022-07-12 10:58:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:55,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:58:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:58:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:58:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:58:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 10:58:55,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:55,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167640915] [2022-07-12 10:58:55,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167640915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:55,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:55,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:58:55,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85507840] [2022-07-12 10:58:55,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:55,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:58:55,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:58:55,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:58:55,829 INFO L87 Difference]: Start difference. First operand 352 states and 414 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:58:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:56,341 INFO L93 Difference]: Finished difference Result 370 states and 437 transitions. [2022-07-12 10:58:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:58:56,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 146 [2022-07-12 10:58:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:56,342 INFO L225 Difference]: With dead ends: 370 [2022-07-12 10:58:56,342 INFO L226 Difference]: Without dead ends: 368 [2022-07-12 10:58:56,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:58:56,343 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 166 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:56,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 302 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:58:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-07-12 10:58:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 356. [2022-07-12 10:58:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 261 states have (on average 1.0804597701149425) internal successors, (282), 265 states have internal predecessors, (282), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (75), 60 states have call predecessors, (75), 59 states have call successors, (75) [2022-07-12 10:58:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 417 transitions. [2022-07-12 10:58:56,375 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 417 transitions. Word has length 146 [2022-07-12 10:58:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:56,376 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 417 transitions. [2022-07-12 10:58:56,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:58:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 417 transitions. [2022-07-12 10:58:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-12 10:58:56,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:56,378 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] [2022-07-12 10:58:56,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:58:56,378 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1881452801, now seen corresponding path program 1 times [2022-07-12 10:58:56,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:56,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855291703] [2022-07-12 10:58:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:56,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:58:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:58:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:58:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:58:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:58:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-12 10:58:57,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:57,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855291703] [2022-07-12 10:58:57,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855291703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:57,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:57,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-12 10:58:57,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058258125] [2022-07-12 10:58:57,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:57,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 10:58:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:57,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 10:58:57,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:58:57,225 INFO L87 Difference]: Start difference. First operand 356 states and 417 transitions. Second operand has 20 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-12 10:58:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:58,476 INFO L93 Difference]: Finished difference Result 393 states and 469 transitions. [2022-07-12 10:58:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:58:58,476 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) Word has length 152 [2022-07-12 10:58:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:58,478 INFO L225 Difference]: With dead ends: 393 [2022-07-12 10:58:58,478 INFO L226 Difference]: Without dead ends: 391 [2022-07-12 10:58:58,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2022-07-12 10:58:58,479 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 252 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:58,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 349 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 10:58:58,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-07-12 10:58:58,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 367. [2022-07-12 10:58:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 269 states have (on average 1.0817843866171004) internal successors, (291), 273 states have internal predecessors, (291), 62 states have call successors, (62), 31 states have call predecessors, (62), 35 states have return successors, (77), 62 states have call predecessors, (77), 61 states have call successors, (77) [2022-07-12 10:58:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 430 transitions. [2022-07-12 10:58:58,513 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 430 transitions. Word has length 152 [2022-07-12 10:58:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:58,513 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 430 transitions. [2022-07-12 10:58:58,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-12 10:58:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 430 transitions. [2022-07-12 10:58:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 10:58:58,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:58,515 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] [2022-07-12 10:58:58,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:58:58,515 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash -799406128, now seen corresponding path program 1 times [2022-07-12 10:58:58,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:58,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751659848] [2022-07-12 10:58:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:58:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:58:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:58:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:58:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 10:58:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:58:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:58:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 10:58:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-12 10:58:58,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:58,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751659848] [2022-07-12 10:58:58,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751659848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:58,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:58,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:58:58,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434483941] [2022-07-12 10:58:58,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:58,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:58:58,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:58:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:58:58,720 INFO L87 Difference]: Start difference. First operand 367 states and 430 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 10:58:59,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:59,016 INFO L93 Difference]: Finished difference Result 481 states and 570 transitions. [2022-07-12 10:58:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:58:59,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-07-12 10:58:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:59,018 INFO L225 Difference]: With dead ends: 481 [2022-07-12 10:58:59,018 INFO L226 Difference]: Without dead ends: 378 [2022-07-12 10:58:59,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:58:59,019 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 125 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:59,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 239 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:58:59,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-12 10:58:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 368. [2022-07-12 10:58:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 270 states have (on average 1.0814814814814815) internal successors, (292), 274 states have internal predecessors, (292), 62 states have call successors, (62), 31 states have call predecessors, (62), 35 states have return successors, (77), 62 states have call predecessors, (77), 61 states have call successors, (77) [2022-07-12 10:58:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 431 transitions. [2022-07-12 10:58:59,053 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 431 transitions. Word has length 163 [2022-07-12 10:58:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 431 transitions. [2022-07-12 10:58:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 10:58:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 431 transitions. [2022-07-12 10:58:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 10:58:59,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:59,055 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] [2022-07-12 10:58:59,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 10:58:59,056 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:59,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1223464279, now seen corresponding path program 1 times [2022-07-12 10:58:59,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:59,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940220504] [2022-07-12 10:58:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:59,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:58:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:58:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:58:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 10:58:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:58:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:58:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 10:58:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 10:58:59,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:59,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940220504] [2022-07-12 10:58:59,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940220504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:59,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:59,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:58:59,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52870427] [2022-07-12 10:58:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:59,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:58:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:58:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:58:59,307 INFO L87 Difference]: Start difference. First operand 368 states and 431 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 10:58:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:59,846 INFO L93 Difference]: Finished difference Result 394 states and 465 transitions. [2022-07-12 10:58:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:58:59,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 156 [2022-07-12 10:58:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:59,848 INFO L225 Difference]: With dead ends: 394 [2022-07-12 10:58:59,848 INFO L226 Difference]: Without dead ends: 392 [2022-07-12 10:58:59,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:58:59,849 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 148 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:59,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 508 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:58:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-12 10:58:59,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 379. [2022-07-12 10:58:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 276 states have (on average 1.0797101449275361) internal successors, (298), 281 states have internal predecessors, (298), 65 states have call successors, (65), 32 states have call predecessors, (65), 37 states have return successors, (84), 65 states have call predecessors, (84), 64 states have call successors, (84) [2022-07-12 10:58:59,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 447 transitions. [2022-07-12 10:58:59,885 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 447 transitions. Word has length 156 [2022-07-12 10:58:59,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:59,886 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 447 transitions. [2022-07-12 10:58:59,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 10:58:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 447 transitions. [2022-07-12 10:58:59,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 10:58:59,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:59,888 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] [2022-07-12 10:58:59,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 10:58:59,888 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1711512995, now seen corresponding path program 1 times [2022-07-12 10:58:59,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:59,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381130622] [2022-07-12 10:58:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:59:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:59:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:59:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:59:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:59:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:59:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:59:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 10:59:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-12 10:59:02,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:02,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381130622] [2022-07-12 10:59:02,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381130622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:02,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:02,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 10:59:02,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706878882] [2022-07-12 10:59:02,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:02,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:59:02,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:59:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:59:02,631 INFO L87 Difference]: Start difference. First operand 379 states and 447 transitions. Second operand has 18 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-12 10:59:03,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:03,981 INFO L93 Difference]: Finished difference Result 406 states and 484 transitions. [2022-07-12 10:59:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:59:03,981 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) Word has length 158 [2022-07-12 10:59:03,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:03,983 INFO L225 Difference]: With dead ends: 406 [2022-07-12 10:59:03,983 INFO L226 Difference]: Without dead ends: 404 [2022-07-12 10:59:03,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:59:03,984 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 236 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:03,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 337 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 10:59:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-12 10:59:04,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 385. [2022-07-12 10:59:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 280 states have (on average 1.0785714285714285) internal successors, (302), 285 states have internal predecessors, (302), 66 states have call successors, (66), 33 states have call predecessors, (66), 38 states have return successors, (85), 66 states have call predecessors, (85), 65 states have call successors, (85) [2022-07-12 10:59:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 453 transitions. [2022-07-12 10:59:04,024 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 453 transitions. Word has length 158 [2022-07-12 10:59:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:04,024 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 453 transitions. [2022-07-12 10:59:04,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-12 10:59:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 453 transitions. [2022-07-12 10:59:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:59:04,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:04,026 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-12 10:59:04,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 10:59:04,026 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -61216083, now seen corresponding path program 1 times [2022-07-12 10:59:04,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:04,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349047367] [2022-07-12 10:59:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:04,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:59:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:59:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:59:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:59:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 10:59:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:59:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 10:59:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-12 10:59:04,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:04,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349047367] [2022-07-12 10:59:04,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349047367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:04,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:04,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:59:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051057391] [2022-07-12 10:59:04,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:04,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:59:04,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:04,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:59:04,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:59:04,348 INFO L87 Difference]: Start difference. First operand 385 states and 453 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-12 10:59:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:04,899 INFO L93 Difference]: Finished difference Result 499 states and 603 transitions. [2022-07-12 10:59:04,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:59:04,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 160 [2022-07-12 10:59:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:04,901 INFO L225 Difference]: With dead ends: 499 [2022-07-12 10:59:04,901 INFO L226 Difference]: Without dead ends: 387 [2022-07-12 10:59:04,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:59:04,903 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 160 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:04,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 509 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:59:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-07-12 10:59:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 386. [2022-07-12 10:59:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 281 states have (on average 1.0782918149466192) internal successors, (303), 286 states have internal predecessors, (303), 66 states have call successors, (66), 33 states have call predecessors, (66), 38 states have return successors, (85), 66 states have call predecessors, (85), 65 states have call successors, (85) [2022-07-12 10:59:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 454 transitions. [2022-07-12 10:59:04,942 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 454 transitions. Word has length 160 [2022-07-12 10:59:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:04,942 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 454 transitions. [2022-07-12 10:59:04,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-12 10:59:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 454 transitions. [2022-07-12 10:59:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 10:59:04,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:04,944 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] [2022-07-12 10:59:04,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 10:59:04,945 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash -407650078, now seen corresponding path program 1 times [2022-07-12 10:59:04,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:04,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337860009] [2022-07-12 10:59:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:04,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:59:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:59:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:59:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:59:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:59:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:59:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:59:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 10:59:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 41 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-12 10:59:05,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:05,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337860009] [2022-07-12 10:59:05,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337860009] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:05,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714998130] [2022-07-12 10:59:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:05,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:05,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:59:05,889 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:59:05,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-12 10:59:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:06,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2845 conjuncts, 124 conjunts are in the unsatisfiable core [2022-07-12 10:59:06,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:59:06,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:59:06,657 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:59:06,657 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 [2022-07-12 10:59:07,017 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-12 10:59:07,017 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 4 case distinctions, treesize of input 20 treesize of output 30 [2022-07-12 10:59:07,114 INFO L356 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-07-12 10:59:07,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 43 [2022-07-12 10:59:24,154 INFO L356 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2022-07-12 10:59:24,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 77 [2022-07-12 10:59:33,913 WARN L233 SmtUtils]: Spent 7.62s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:59:33,928 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:59:33,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:59:33,943 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-07-12 10:59:33,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 69 [2022-07-12 10:59:38,289 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 28 treesize of output 28 [2022-07-12 10:59:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 56 proven. 124 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 10:59:39,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:59:40,395 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3009 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be16_~#x#1.base| v_ArrVal_3009) |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-12 10:59:40,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714998130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:40,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:59:40,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 38] total 57 [2022-07-12 10:59:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631703492] [2022-07-12 10:59:40,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:59:40,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-07-12 10:59:40,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-07-12 10:59:40,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=4138, Unknown=8, NotChecked=130, Total=4556 [2022-07-12 10:59:40,405 INFO L87 Difference]: Start difference. First operand 386 states and 454 transitions. Second operand has 57 states, 50 states have (on average 3.36) internal successors, (168), 51 states have internal predecessors, (168), 20 states have call successors, (32), 11 states have call predecessors, (32), 16 states have return successors, (31), 15 states have call predecessors, (31), 20 states have call successors, (31) [2022-07-12 10:59:59,467 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 57 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:00:08,420 WARN L233 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 48 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:00:11,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:11,829 INFO L93 Difference]: Finished difference Result 598 states and 732 transitions. [2022-07-12 11:00:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-12 11:00:11,830 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 50 states have (on average 3.36) internal successors, (168), 51 states have internal predecessors, (168), 20 states have call successors, (32), 11 states have call predecessors, (32), 16 states have return successors, (31), 15 states have call predecessors, (31), 20 states have call successors, (31) Word has length 159 [2022-07-12 11:00:11,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:11,832 INFO L225 Difference]: With dead ends: 598 [2022-07-12 11:00:11,832 INFO L226 Difference]: Without dead ends: 501 [2022-07-12 11:00:11,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 220 SyntacticMatches, 19 SemanticMatches, 111 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4268 ImplicationChecksByTransitivity, 61.8s TimeCoverageRelationStatistics Valid=953, Invalid=11471, Unknown=12, NotChecked=220, Total=12656 [2022-07-12 11:00:11,834 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 368 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 3838 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 6535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 3838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2435 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:11,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1560 Invalid, 6535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 3838 Invalid, 0 Unknown, 2435 Unchecked, 2.3s Time] [2022-07-12 11:00:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-07-12 11:00:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 457. [2022-07-12 11:00:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 335 states have (on average 1.0716417910447762) internal successors, (359), 340 states have internal predecessors, (359), 77 states have call successors, (77), 37 states have call predecessors, (77), 44 states have return successors, (101), 79 states have call predecessors, (101), 76 states have call successors, (101) [2022-07-12 11:00:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 537 transitions. [2022-07-12 11:00:11,884 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 537 transitions. Word has length 159 [2022-07-12 11:00:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:11,885 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 537 transitions. [2022-07-12 11:00:11,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 50 states have (on average 3.36) internal successors, (168), 51 states have internal predecessors, (168), 20 states have call successors, (32), 11 states have call predecessors, (32), 16 states have return successors, (31), 15 states have call predecessors, (31), 20 states have call successors, (31) [2022-07-12 11:00:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 537 transitions. [2022-07-12 11:00:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 11:00:11,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:11,887 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] [2022-07-12 11:00:11,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:12,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-12 11:00:12,116 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:12,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:12,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1134198020, now seen corresponding path program 1 times [2022-07-12 11:00:12,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:12,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505518634] [2022-07-12 11:00:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:12,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:00:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:00:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:00:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:00:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:00:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:00:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:00:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:00:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:00:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:00:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:00:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 11:00:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 39 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-12 11:00:12,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:12,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505518634] [2022-07-12 11:00:12,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505518634] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:12,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605566935] [2022-07-12 11:00:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:12,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:12,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:12,820 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:00:12,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-12 11:00:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 122 conjunts are in the unsatisfiable core [2022-07-12 11:00:13,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:13,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:00:13,668 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 5 treesize of output 3 [2022-07-12 11:00:13,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:00:13,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 11:00:14,246 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-12 11:00:14,246 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 [2022-07-12 11:00:14,315 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 11:00:14,319 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 28 treesize of output 31 [2022-07-12 11:00:14,526 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 11:00:14,526 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 28 treesize of output 31 [2022-07-12 11:00:14,601 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-12 11:00:14,602 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 [2022-07-12 11:00:14,611 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 11:00:14,611 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 28 treesize of output 31 [2022-07-12 11:00:19,113 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 11:00:19,114 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 28 treesize of output 31 [2022-07-12 11:00:20,023 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 11:00:20,023 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 39 treesize of output 19 [2022-07-12 11:00:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 31 proven. 160 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 11:00:20,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:21,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605566935] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:21,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:00:21,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 32] total 46 [2022-07-12 11:00:21,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022055631] [2022-07-12 11:00:21,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:21,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-12 11:00:21,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:21,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-12 11:00:21,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=3526, Unknown=2, NotChecked=0, Total=3782 [2022-07-12 11:00:21,262 INFO L87 Difference]: Start difference. First operand 457 states and 537 transitions. Second operand has 46 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 18 states have call successors, (33), 11 states have call predecessors, (33), 16 states have return successors, (33), 14 states have call predecessors, (33), 18 states have call successors, (33) [2022-07-12 11:00:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:29,728 INFO L93 Difference]: Finished difference Result 636 states and 764 transitions. [2022-07-12 11:00:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-12 11:00:29,728 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 18 states have call successors, (33), 11 states have call predecessors, (33), 16 states have return successors, (33), 14 states have call predecessors, (33), 18 states have call successors, (33) Word has length 164 [2022-07-12 11:00:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:29,730 INFO L225 Difference]: With dead ends: 636 [2022-07-12 11:00:29,731 INFO L226 Difference]: Without dead ends: 502 [2022-07-12 11:00:29,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 228 SyntacticMatches, 19 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3818 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=997, Invalid=11655, Unknown=4, NotChecked=0, Total=12656 [2022-07-12 11:00:29,732 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 233 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 5297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2263 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:29,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1745 Invalid, 5297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2862 Invalid, 0 Unknown, 2263 Unchecked, 1.8s Time] [2022-07-12 11:00:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-07-12 11:00:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 390. [2022-07-12 11:00:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 292 states have (on average 1.071917808219178) internal successors, (313), 296 states have internal predecessors, (313), 59 states have call successors, (59), 35 states have call predecessors, (59), 38 states have return successors, (72), 58 states have call predecessors, (72), 56 states have call successors, (72) [2022-07-12 11:00:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 444 transitions. [2022-07-12 11:00:29,774 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 444 transitions. Word has length 164 [2022-07-12 11:00:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:29,774 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 444 transitions. [2022-07-12 11:00:29,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 18 states have call successors, (33), 11 states have call predecessors, (33), 16 states have return successors, (33), 14 states have call predecessors, (33), 18 states have call successors, (33) [2022-07-12 11:00:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 444 transitions. [2022-07-12 11:00:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 11:00:29,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:29,776 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:29,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:30,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-12 11:00:30,004 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1602985816, now seen corresponding path program 1 times [2022-07-12 11:00:30,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:30,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914863078] [2022-07-12 11:00:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:00:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:00:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:00:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:00:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:00:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:00:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 11:00:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-12 11:00:31,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:31,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914863078] [2022-07-12 11:00:31,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914863078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:31,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:00:31,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-12 11:00:31,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83955424] [2022-07-12 11:00:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:31,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 11:00:31,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 11:00:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2022-07-12 11:00:31,458 INFO L87 Difference]: Start difference. First operand 390 states and 444 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 11 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 10 states have call successors, (16) [2022-07-12 11:00:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:34,762 INFO L93 Difference]: Finished difference Result 443 states and 532 transitions. [2022-07-12 11:00:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 11:00:34,763 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 11 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 10 states have call successors, (16) Word has length 159 [2022-07-12 11:00:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:34,765 INFO L225 Difference]: With dead ends: 443 [2022-07-12 11:00:34,765 INFO L226 Difference]: Without dead ends: 441 [2022-07-12 11:00:34,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2022-07-12 11:00:34,765 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 292 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 3004 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 3004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:34,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 699 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 3004 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 11:00:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-12 11:00:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 406. [2022-07-12 11:00:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 302 states have (on average 1.0728476821192052) internal successors, (324), 307 states have internal predecessors, (324), 63 states have call successors, (63), 36 states have call predecessors, (63), 40 states have return successors, (77), 62 states have call predecessors, (77), 60 states have call successors, (77) [2022-07-12 11:00:34,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 464 transitions. [2022-07-12 11:00:34,825 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 464 transitions. Word has length 159 [2022-07-12 11:00:34,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:34,825 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 464 transitions. [2022-07-12 11:00:34,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 11 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 10 states have call successors, (16) [2022-07-12 11:00:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 464 transitions. [2022-07-12 11:00:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 11:00:34,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:34,827 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:34,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 11:00:34,827 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:34,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1354839322, now seen corresponding path program 1 times [2022-07-12 11:00:34,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:34,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203387281] [2022-07-12 11:00:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:34,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:00:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:00:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:00:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:00:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:00:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:00:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 11:00:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-12 11:00:35,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:35,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203387281] [2022-07-12 11:00:35,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203387281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:35,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:00:35,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-12 11:00:35,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241433345] [2022-07-12 11:00:35,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:35,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 11:00:35,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 11:00:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:00:35,647 INFO L87 Difference]: Start difference. First operand 406 states and 464 transitions. Second operand has 20 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2022-07-12 11:00:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:36,948 INFO L93 Difference]: Finished difference Result 430 states and 502 transitions. [2022-07-12 11:00:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:00:36,948 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 159 [2022-07-12 11:00:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:36,950 INFO L225 Difference]: With dead ends: 430 [2022-07-12 11:00:36,950 INFO L226 Difference]: Without dead ends: 428 [2022-07-12 11:00:36,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:00:36,950 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 225 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:36,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 334 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 11:00:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-07-12 11:00:36,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 398. [2022-07-12 11:00:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 297 states have (on average 1.0740740740740742) internal successors, (319), 302 states have internal predecessors, (319), 61 states have call successors, (61), 36 states have call predecessors, (61), 39 states have return successors, (74), 59 states have call predecessors, (74), 58 states have call successors, (74) [2022-07-12 11:00:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 454 transitions. [2022-07-12 11:00:36,990 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 454 transitions. Word has length 159 [2022-07-12 11:00:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:36,990 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 454 transitions. [2022-07-12 11:00:36,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 16 states have internal predecessors, (57), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2022-07-12 11:00:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 454 transitions. [2022-07-12 11:00:36,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 11:00:36,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:36,992 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-12 11:00:36,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 11:00:36,992 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1309589061, now seen corresponding path program 1 times [2022-07-12 11:00:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:36,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83672092] [2022-07-12 11:00:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:00:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:00:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:00:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:00:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:00:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:00:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 11:00:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-12 11:00:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:37,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83672092] [2022-07-12 11:00:37,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83672092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:37,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:00:37,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:00:37,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546625353] [2022-07-12 11:00:37,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:00:37,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:00:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:00:37,218 INFO L87 Difference]: Start difference. First operand 398 states and 454 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-12 11:00:37,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:37,704 INFO L93 Difference]: Finished difference Result 450 states and 514 transitions. [2022-07-12 11:00:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:00:37,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 159 [2022-07-12 11:00:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:37,706 INFO L225 Difference]: With dead ends: 450 [2022-07-12 11:00:37,706 INFO L226 Difference]: Without dead ends: 400 [2022-07-12 11:00:37,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:00:37,707 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 149 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:37,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 252 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:00:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-12 11:00:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2022-07-12 11:00:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 297 states have (on average 1.063973063973064) internal successors, (316), 302 states have internal predecessors, (316), 61 states have call successors, (61), 36 states have call predecessors, (61), 39 states have return successors, (74), 59 states have call predecessors, (74), 58 states have call successors, (74) [2022-07-12 11:00:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 451 transitions. [2022-07-12 11:00:37,744 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 451 transitions. Word has length 159 [2022-07-12 11:00:37,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:37,744 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 451 transitions. [2022-07-12 11:00:37,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-12 11:00:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 451 transitions. [2022-07-12 11:00:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 11:00:37,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:37,746 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:37,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-12 11:00:37,746 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:37,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:37,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1892373590, now seen corresponding path program 1 times [2022-07-12 11:00:37,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:37,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404409852] [2022-07-12 11:00:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:00:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:00:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:00:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:00:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:00:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:00:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:00:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:00:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 11:00:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 11:00:38,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:38,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404409852] [2022-07-12 11:00:38,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404409852] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:38,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573814539] [2022-07-12 11:00:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:38,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:38,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:38,190 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:00:38,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-12 11:00:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 2932 conjuncts, 149 conjunts are in the unsatisfiable core [2022-07-12 11:00:38,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:38,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:00:39,009 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:00:39,009 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 [2022-07-12 11:00:39,037 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 [2022-07-12 11:00:39,538 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-12 11:00:39,538 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 20 treesize of output 22 [2022-07-12 11:00:39,580 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 19 treesize of output 21 [2022-07-12 11:00:39,585 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