./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_array_eq_ignore_case_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 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:03:44,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:03:44,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:03:44,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:03:44,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:03:44,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:03:44,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:03:44,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:03:44,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:03:44,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:03:44,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:03:44,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:03:44,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:03:44,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:03:44,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:03:44,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:03:44,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:03:44,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:03:44,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:03:44,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:03:44,852 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:03:44,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:03:44,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:03:44,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:03:44,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:03:44,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:03:44,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:03:44,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:03:44,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:03:44,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:03:44,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:03:44,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:03:44,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:03:44,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:03:44,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:03:44,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:03:44,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:03:44,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:03:44,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:03:44,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:03:44,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:03:44,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:03:44,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:03:44,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:03:44,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:03:44,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:03:44,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:03:44,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:03:44,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:03:44,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:03:44,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:03:44,894 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:03:44,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:03:44,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:03:44,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:03:44,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:03:44,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:03:44,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:03:44,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:03:44,896 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:03:44,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:03:44,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:03:44,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:03:44,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:03:44,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:03:44,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:03:44,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:03:44,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:03:44,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:03:44,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:03:44,899 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:03:44,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:03:44,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:03:44,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2022-07-22 22:03:45,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:03:45,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:03:45,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:03:45,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:03:45,106 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:03:45,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2022-07-22 22:03:45,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7634ede8/eb9022fc14f04a45ae7c54e0b68ef6ea/FLAGd0a11577c [2022-07-22 22:03:45,801 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:03:45,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2022-07-22 22:03:45,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7634ede8/eb9022fc14f04a45ae7c54e0b68ef6ea/FLAGd0a11577c [2022-07-22 22:03:46,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7634ede8/eb9022fc14f04a45ae7c54e0b68ef6ea [2022-07-22 22:03:46,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:03:46,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:03:46,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:03:46,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:03:46,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:03:46,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:03:46" (1/1) ... [2022-07-22 22:03:46,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33325c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:46, skipping insertion in model container [2022-07-22 22:03:46,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:03:46" (1/1) ... [2022-07-22 22:03:46,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:03:46,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:03:46,462 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_array_eq_ignore_case_harness.i[4498,4511] [2022-07-22 22:03:46,468 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_array_eq_ignore_case_harness.i[4558,4571] [2022-07-22 22:03:47,098 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,101 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,103 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,107 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,109 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,117 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,125 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,126 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,133 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:03:47,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:03:47,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:03:47,374 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:03:47,375 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:03:47,375 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:03:47,375 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:03:47,376 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:03:47,376 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:03:47,377 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:03:47,492 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:03:47,602 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,603 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:03:47,740 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:03:47,757 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_array_eq_ignore_case_harness.i[4498,4511] [2022-07-22 22:03:47,758 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_array_eq_ignore_case_harness.i[4558,4571] [2022-07-22 22:03:47,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,806 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,806 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,807 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,818 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,818 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,844 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:03:47,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:03:47,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:03:47,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:03:47,846 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:03:47,846 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:03:47,847 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:03:47,847 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:03:47,847 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:03:47,848 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:03:47,864 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:03:47,905 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,905 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:03:47,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:03:48,128 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:03:48,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48 WrapperNode [2022-07-22 22:03:48,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:03:48,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:03:48,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:03:48,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:03:48,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,269 INFO L137 Inliner]: procedures = 691, calls = 2615, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 774 [2022-07-22 22:03:48,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:03:48,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:03:48,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:03:48,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:03:48,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:03:48,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:03:48,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:03:48,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:03:48,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (1/1) ... [2022-07-22 22:03:48,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:03:48,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:03:48,412 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) [2022-07-22 22:03:48,414 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 [2022-07-22 22:03:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2022-07-22 22:03:48,444 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2022-07-22 22:03:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:03:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:03:48,445 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:03:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:03:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:03:48,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:03:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:03:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:03:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-22 22:03:48,447 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-22 22:03:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:03:48,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:03:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:03:48,448 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:03:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:03:48,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:03:48,448 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-22 22:03:48,449 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-22 22:03:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:03:48,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:03:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:03:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:03:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:03:48,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:03:48,700 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:03:48,703 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:03:49,332 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:03:49,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:03:49,337 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 22:03:49,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:03:49 BoogieIcfgContainer [2022-07-22 22:03:49,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:03:49,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:03:49,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:03:49,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:03:49,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:03:46" (1/3) ... [2022-07-22 22:03:49,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3d190d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:03:49, skipping insertion in model container [2022-07-22 22:03:49,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:03:48" (2/3) ... [2022-07-22 22:03:49,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3d190d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:03:49, skipping insertion in model container [2022-07-22 22:03:49,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:03:49" (3/3) ... [2022-07-22 22:03:49,344 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2022-07-22 22:03:49,353 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:03:49,354 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:03:49,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:03:49,389 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@284611eb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79bea89a [2022-07-22 22:03:49,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:03:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 47 states have (on average 1.297872340425532) internal successors, (61), 51 states have internal predecessors, (61), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-22 22:03:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 22:03:49,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:03:49,399 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-22 22:03:49,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:03:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash 106347311, now seen corresponding path program 1 times [2022-07-22 22:03:49,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:49,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837292221] [2022-07-22 22:03:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:49,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:03:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:03:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:03:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 22:03:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:03:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:03:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:03:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:03:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 22:03:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837292221] [2022-07-22 22:03:49,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837292221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:03:49,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:03:49,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:03:49,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606253156] [2022-07-22 22:03:49,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:03:49,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:03:49,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:03:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:03:49,970 INFO L87 Difference]: Start difference. First operand has 77 states, 47 states have (on average 1.297872340425532) internal successors, (61), 51 states have internal predecessors, (61), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:03:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:03:50,165 INFO L93 Difference]: Finished difference Result 156 states and 223 transitions. [2022-07-22 22:03:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:03:50,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2022-07-22 22:03:50,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:03:50,174 INFO L225 Difference]: With dead ends: 156 [2022-07-22 22:03:50,174 INFO L226 Difference]: Without dead ends: 77 [2022-07-22 22:03:50,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:03:50,179 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 76 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:03:50,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 119 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:03:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-22 22:03:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2022-07-22 22:03:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 46 states have internal predecessors, (53), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-22 22:03:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2022-07-22 22:03:50,211 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 65 [2022-07-22 22:03:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:03:50,212 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2022-07-22 22:03:50,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:03:50,212 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2022-07-22 22:03:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 22:03:50,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:03:50,215 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-22 22:03:50,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:03:50,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:03:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -566993231, now seen corresponding path program 1 times [2022-07-22 22:03:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:50,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435812464] [2022-07-22 22:03:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:03:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:03:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:03:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 22:03:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:03:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:03:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:03:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:03:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 22:03:50,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:50,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435812464] [2022-07-22 22:03:50,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435812464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:03:50,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:03:50,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:03:50,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167786829] [2022-07-22 22:03:50,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:03:50,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:03:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:03:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:03:50,550 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:03:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:03:50,828 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2022-07-22 22:03:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:03:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2022-07-22 22:03:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:03:50,830 INFO L225 Difference]: With dead ends: 97 [2022-07-22 22:03:50,831 INFO L226 Difference]: Without dead ends: 80 [2022-07-22 22:03:50,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:03:50,832 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 78 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:03:50,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 149 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:03:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-22 22:03:50,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2022-07-22 22:03:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 48 states have internal predecessors, (55), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-22 22:03:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2022-07-22 22:03:50,841 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 65 [2022-07-22 22:03:50,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:03:50,841 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2022-07-22 22:03:50,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:03:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2022-07-22 22:03:50,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 22:03:50,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:03:50,843 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-22 22:03:50,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 22:03:50,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:03:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:50,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1579169156, now seen corresponding path program 1 times [2022-07-22 22:03:50,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518727460] [2022-07-22 22:03:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:50,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:03:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:03:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:03:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 22:03:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:03:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:03:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:03:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:03:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 22:03:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:51,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518727460] [2022-07-22 22:03:51,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518727460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:03:51,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:03:51,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:03:51,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424622017] [2022-07-22 22:03:51,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:03:51,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:03:51,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:51,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:03:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:03:51,482 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 22:03:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:03:52,025 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2022-07-22 22:03:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:03:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2022-07-22 22:03:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:03:52,027 INFO L225 Difference]: With dead ends: 124 [2022-07-22 22:03:52,027 INFO L226 Difference]: Without dead ends: 101 [2022-07-22 22:03:52,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:03:52,028 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 120 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:03:52,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 201 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:03:52,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-22 22:03:52,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2022-07-22 22:03:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 57 states have internal predecessors, (65), 26 states have call successors, (26), 8 states have call predecessors, (26), 10 states have return successors, (28), 27 states have call predecessors, (28), 25 states have call successors, (28) [2022-07-22 22:03:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 119 transitions. [2022-07-22 22:03:52,044 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 119 transitions. Word has length 67 [2022-07-22 22:03:52,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:03:52,045 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 119 transitions. [2022-07-22 22:03:52,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 22:03:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 119 transitions. [2022-07-22 22:03:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 22:03:52,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:03:52,051 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-22 22:03:52,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 22:03:52,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:03:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash 537595811, now seen corresponding path program 1 times [2022-07-22 22:03:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:52,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545061415] [2022-07-22 22:03:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:52,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:03:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:03:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:03:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 22:03:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:03:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:03:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:03:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:03:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 22:03:52,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:52,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545061415] [2022-07-22 22:03:52,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545061415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:03:52,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:03:52,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:03:52,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86040311] [2022-07-22 22:03:52,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:03:52,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:03:52,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:52,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:03:52,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:03:52,371 INFO L87 Difference]: Start difference. First operand 90 states and 119 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:03:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:03:52,886 INFO L93 Difference]: Finished difference Result 144 states and 206 transitions. [2022-07-22 22:03:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:03:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2022-07-22 22:03:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:03:52,889 INFO L225 Difference]: With dead ends: 144 [2022-07-22 22:03:52,889 INFO L226 Difference]: Without dead ends: 130 [2022-07-22 22:03:52,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:03:52,890 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 90 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:03:52,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 221 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:03:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-22 22:03:52,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2022-07-22 22:03:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 76 states have internal predecessors, (87), 42 states have call successors, (42), 9 states have call predecessors, (42), 12 states have return successors, (50), 45 states have call predecessors, (50), 41 states have call successors, (50) [2022-07-22 22:03:52,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 179 transitions. [2022-07-22 22:03:52,921 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 179 transitions. Word has length 69 [2022-07-22 22:03:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:03:52,922 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 179 transitions. [2022-07-22 22:03:52,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:03:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 179 transitions. [2022-07-22 22:03:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 22:03:52,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:03:52,923 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-22 22:03:52,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 22:03:52,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:03:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:52,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1640968124, now seen corresponding path program 1 times [2022-07-22 22:03:52,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:52,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718026183] [2022-07-22 22:03:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:52,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:03:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:03:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:03:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 22:03:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:03:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:03:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:03:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:03:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:03:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:53,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718026183] [2022-07-22 22:03:53,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718026183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:03:53,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176467141] [2022-07-22 22:03:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:53,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:03:53,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:03:53,438 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) [2022-07-22 22:03:53,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:03:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:53,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 22:03:53,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:03:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:03:54,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:03:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176467141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:03:54,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:03:54,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-07-22 22:03:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150907278] [2022-07-22 22:03:54,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:03:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:03:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:03:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:03:54,023 INFO L87 Difference]: Start difference. First operand 126 states and 179 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:03:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:03:54,125 INFO L93 Difference]: Finished difference Result 156 states and 212 transitions. [2022-07-22 22:03:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:03:54,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 70 [2022-07-22 22:03:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:03:54,130 INFO L225 Difference]: With dead ends: 156 [2022-07-22 22:03:54,133 INFO L226 Difference]: Without dead ends: 134 [2022-07-22 22:03:54,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:03:54,135 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 8 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:03:54,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 437 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:03:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-22 22:03:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2022-07-22 22:03:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 79 states have internal predecessors, (88), 42 states have call successors, (42), 10 states have call predecessors, (42), 13 states have return successors, (50), 45 states have call predecessors, (50), 41 states have call successors, (50) [2022-07-22 22:03:54,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 180 transitions. [2022-07-22 22:03:54,157 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 180 transitions. Word has length 70 [2022-07-22 22:03:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:03:54,158 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 180 transitions. [2022-07-22 22:03:54,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:03:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 180 transitions. [2022-07-22 22:03:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 22:03:54,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:03:54,160 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-22 22:03:54,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:03:54,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:03:54,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:03:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1874232636, now seen corresponding path program 1 times [2022-07-22 22:03:54,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:54,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193710688] [2022-07-22 22:03:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:54,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:03:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:03:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:03:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:03:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:03:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:03:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:03:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 22:03:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 22:03:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193710688] [2022-07-22 22:03:54,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193710688] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:03:54,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958229137] [2022-07-22 22:03:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:54,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:03:54,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:03:54,922 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) [2022-07-22 22:03:54,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:03:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:55,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-22 22:03:55,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:03:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 22:03:55,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:03:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 22:03:56,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958229137] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:03:56,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:03:56,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20, 14] total 42 [2022-07-22 22:03:56,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221286894] [2022-07-22 22:03:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:03:56,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 22:03:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 22:03:56,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2022-07-22 22:03:56,442 INFO L87 Difference]: Start difference. First operand 130 states and 180 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:03:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:03:57,045 INFO L93 Difference]: Finished difference Result 163 states and 227 transitions. [2022-07-22 22:03:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:03:57,045 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-07-22 22:03:57,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:03:57,047 INFO L225 Difference]: With dead ends: 163 [2022-07-22 22:03:57,047 INFO L226 Difference]: Without dead ends: 141 [2022-07-22 22:03:57,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=2454, Unknown=0, NotChecked=0, Total=2652 [2022-07-22 22:03:57,050 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 129 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:03:57,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 696 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:03:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-22 22:03:57,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2022-07-22 22:03:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 81 states have internal predecessors, (89), 42 states have call successors, (42), 10 states have call predecessors, (42), 14 states have return successors, (57), 45 states have call predecessors, (57), 41 states have call successors, (57) [2022-07-22 22:03:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 188 transitions. [2022-07-22 22:03:57,087 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 188 transitions. Word has length 80 [2022-07-22 22:03:57,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:03:57,088 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 188 transitions. [2022-07-22 22:03:57,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:03:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 188 transitions. [2022-07-22 22:03:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 22:03:57,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:03:57,089 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:03:57,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 22:03:57,319 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,SelfDestructingSolverStorable5 [2022-07-22 22:03:57,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:03:57,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash 510934331, now seen corresponding path program 1 times [2022-07-22 22:03:57,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:57,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411116306] [2022-07-22 22:03:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:57,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:03:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:03:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:03:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:03:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:03:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:03:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:03:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:03:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 22:03:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:03:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 22:03:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:58,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411116306] [2022-07-22 22:03:58,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411116306] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:03:58,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384249749] [2022-07-22 22:03:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:58,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:03:58,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:03:58,093 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) [2022-07-22 22:03:58,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:03:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:58,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2498 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-22 22:03:58,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:03:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 22:03:58,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:03:58,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384249749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:03:58,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:03:58,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 29 [2022-07-22 22:03:58,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434460974] [2022-07-22 22:03:58,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:03:58,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 22:03:58,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:58,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 22:03:58,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-07-22 22:03:58,923 INFO L87 Difference]: Start difference. First operand 132 states and 188 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 22:03:59,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:03:59,435 INFO L93 Difference]: Finished difference Result 193 states and 285 transitions. [2022-07-22 22:03:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 22:03:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2022-07-22 22:03:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:03:59,438 INFO L225 Difference]: With dead ends: 193 [2022-07-22 22:03:59,438 INFO L226 Difference]: Without dead ends: 158 [2022-07-22 22:03:59,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 22:03:59,439 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 38 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:03:59,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1208 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:03:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-22 22:03:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2022-07-22 22:03:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 82 states have (on average 1.170731707317073) internal successors, (96), 89 states have internal predecessors, (96), 52 states have call successors, (52), 10 states have call predecessors, (52), 15 states have return successors, (75), 55 states have call predecessors, (75), 51 states have call successors, (75) [2022-07-22 22:03:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 223 transitions. [2022-07-22 22:03:59,463 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 223 transitions. Word has length 83 [2022-07-22 22:03:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:03:59,464 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 223 transitions. [2022-07-22 22:03:59,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 22:03:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 223 transitions. [2022-07-22 22:03:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 22:03:59,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:03:59,467 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-22 22:03:59,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:03:59,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:03:59,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:03:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:03:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1291449293, now seen corresponding path program 1 times [2022-07-22 22:03:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:03:59,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491669888] [2022-07-22 22:03:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:03:59,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:03:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:03:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:03:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:03:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 22:03:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:03:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:03:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:03:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:03:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:03:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:03:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:03:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:03:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 22:03:59,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:03:59,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491669888] [2022-07-22 22:03:59,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491669888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:03:59,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:03:59,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:03:59,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761163315] [2022-07-22 22:03:59,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:03:59,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:03:59,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:03:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:03:59,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:03:59,942 INFO L87 Difference]: Start difference. First operand 150 states and 223 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 22:04:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:00,535 INFO L93 Difference]: Finished difference Result 169 states and 242 transitions. [2022-07-22 22:04:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:04:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 75 [2022-07-22 22:04:00,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:00,536 INFO L225 Difference]: With dead ends: 169 [2022-07-22 22:04:00,537 INFO L226 Difference]: Without dead ends: 141 [2022-07-22 22:04:00,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:04:00,538 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 102 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:00,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 232 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:04:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-22 22:04:00,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2022-07-22 22:04:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 84 states have internal predecessors, (90), 46 states have call successors, (46), 10 states have call predecessors, (46), 15 states have return successors, (65), 48 states have call predecessors, (65), 45 states have call successors, (65) [2022-07-22 22:04:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2022-07-22 22:04:00,561 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 75 [2022-07-22 22:04:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:00,562 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2022-07-22 22:04:00,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 22:04:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2022-07-22 22:04:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 22:04:00,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:00,564 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-22 22:04:00,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 22:04:00,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:00,565 INFO L85 PathProgramCache]: Analyzing trace with hash -66334228, now seen corresponding path program 1 times [2022-07-22 22:04:00,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:00,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485298420] [2022-07-22 22:04:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:00,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:04:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:00,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:00,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:04:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:04:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:04:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:04:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:04:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:04:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:04:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:04:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-22 22:04:01,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:01,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485298420] [2022-07-22 22:04:01,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485298420] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:04:01,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318163738] [2022-07-22 22:04:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:01,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:01,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:01,308 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) [2022-07-22 22:04:01,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:04:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:01,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-22 22:04:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:04:02,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:04:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-22 22:04:02,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318163738] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:04:02,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:04:02,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [24, 20] total 46 [2022-07-22 22:04:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342632021] [2022-07-22 22:04:02,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:02,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:04:02,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:04:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 22:04:02,674 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:04:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:02,807 INFO L93 Difference]: Finished difference Result 159 states and 226 transitions. [2022-07-22 22:04:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:04:02,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-07-22 22:04:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:02,809 INFO L225 Difference]: With dead ends: 159 [2022-07-22 22:04:02,809 INFO L226 Difference]: Without dead ends: 157 [2022-07-22 22:04:02,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=2113, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 22:04:02,810 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 39 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:02,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 564 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:04:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-22 22:04:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2022-07-22 22:04:02,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 90 states have internal predecessors, (97), 48 states have call successors, (48), 12 states have call predecessors, (48), 17 states have return successors, (67), 50 states have call predecessors, (67), 47 states have call successors, (67) [2022-07-22 22:04:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 212 transitions. [2022-07-22 22:04:02,826 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 212 transitions. Word has length 94 [2022-07-22 22:04:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:02,826 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 212 transitions. [2022-07-22 22:04:02,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:04:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 212 transitions. [2022-07-22 22:04:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-22 22:04:02,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:02,828 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:04:02,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 22:04:03,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:03,045 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:03,046 INFO L85 PathProgramCache]: Analyzing trace with hash -727359888, now seen corresponding path program 1 times [2022-07-22 22:04:03,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:03,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882946427] [2022-07-22 22:04:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:03,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:04:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:04:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:04:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:04:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:04:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:04:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:04:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 22:04:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:04:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 22:04:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882946427] [2022-07-22 22:04:03,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882946427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:03,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:03,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:04:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615067632] [2022-07-22 22:04:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:03,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:04:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:04:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:04:03,345 INFO L87 Difference]: Start difference. First operand 149 states and 212 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:04:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:03,765 INFO L93 Difference]: Finished difference Result 171 states and 237 transitions. [2022-07-22 22:04:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:04:03,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2022-07-22 22:04:03,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:03,767 INFO L225 Difference]: With dead ends: 171 [2022-07-22 22:04:03,767 INFO L226 Difference]: Without dead ends: 144 [2022-07-22 22:04:03,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:04:03,768 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 80 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:03,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 309 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:04:03,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-07-22 22:04:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-07-22 22:04:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 82 states have (on average 1.170731707317073) internal successors, (96), 89 states have internal predecessors, (96), 44 states have call successors, (44), 12 states have call predecessors, (44), 17 states have return successors, (59), 46 states have call predecessors, (59), 42 states have call successors, (59) [2022-07-22 22:04:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 199 transitions. [2022-07-22 22:04:03,779 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 199 transitions. Word has length 86 [2022-07-22 22:04:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:03,780 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 199 transitions. [2022-07-22 22:04:03,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:04:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 199 transitions. [2022-07-22 22:04:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 22:04:03,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:03,781 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-22 22:04:03,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 22:04:03,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1854673709, now seen corresponding path program 1 times [2022-07-22 22:04:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:03,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659375711] [2022-07-22 22:04:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:04:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:04:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 22:04:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:04:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:04:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:04:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:04:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:04:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-22 22:04:04,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:04,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659375711] [2022-07-22 22:04:04,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659375711] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:04:04,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755699793] [2022-07-22 22:04:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:04,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:04,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:04,232 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) [2022-07-22 22:04:04,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:04:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:04,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-22 22:04:04,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:04:04,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:04:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-22 22:04:05,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755699793] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:04:05,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:04:05,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 37 [2022-07-22 22:04:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377291374] [2022-07-22 22:04:05,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:04:05,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 22:04:05,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:05,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 22:04:05,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1216, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 22:04:05,283 INFO L87 Difference]: Start difference. First operand 144 states and 199 transitions. Second operand has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2022-07-22 22:04:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:06,510 INFO L93 Difference]: Finished difference Result 191 states and 270 transitions. [2022-07-22 22:04:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 22:04:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) Word has length 87 [2022-07-22 22:04:06,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:06,512 INFO L225 Difference]: With dead ends: 191 [2022-07-22 22:04:06,512 INFO L226 Difference]: Without dead ends: 159 [2022-07-22 22:04:06,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 22:04:06,513 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 207 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:06,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 552 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 22:04:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-22 22:04:06,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2022-07-22 22:04:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 92 states have internal predecessors, (101), 49 states have call successors, (49), 12 states have call predecessors, (49), 17 states have return successors, (66), 53 states have call predecessors, (66), 47 states have call successors, (66) [2022-07-22 22:04:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 216 transitions. [2022-07-22 22:04:06,549 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 216 transitions. Word has length 87 [2022-07-22 22:04:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:06,549 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 216 transitions. [2022-07-22 22:04:06,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2022-07-22 22:04:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 216 transitions. [2022-07-22 22:04:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 22:04:06,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:06,551 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-22 22:04:06,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:06,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 22:04:06,768 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1085947873, now seen corresponding path program 1 times [2022-07-22 22:04:06,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:06,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480980606] [2022-07-22 22:04:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:06,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:06,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:04:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:04:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:04:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:06,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:04:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:06,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:04:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:04:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:04:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:04:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:04:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 22:04:07,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:07,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480980606] [2022-07-22 22:04:07,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480980606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:04:07,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010070981] [2022-07-22 22:04:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:07,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:07,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:07,090 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) [2022-07-22 22:04:07,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:04:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:07,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-22 22:04:07,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:04:07,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:04:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-22 22:04:08,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010070981] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:04:08,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:04:08,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17, 13] total 37 [2022-07-22 22:04:08,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215398575] [2022-07-22 22:04:08,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:08,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 22:04:08,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 22:04:08,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 22:04:08,224 INFO L87 Difference]: Start difference. First operand 153 states and 216 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-22 22:04:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:08,770 INFO L93 Difference]: Finished difference Result 193 states and 285 transitions. [2022-07-22 22:04:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:04:08,771 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 97 [2022-07-22 22:04:08,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:08,772 INFO L225 Difference]: With dead ends: 193 [2022-07-22 22:04:08,772 INFO L226 Difference]: Without dead ends: 164 [2022-07-22 22:04:08,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2022-07-22 22:04:08,773 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 123 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:08,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 589 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:04:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-22 22:04:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 158. [2022-07-22 22:04:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 93 states have internal predecessors, (103), 53 states have call successors, (53), 12 states have call predecessors, (53), 17 states have return successors, (71), 58 states have call predecessors, (71), 51 states have call successors, (71) [2022-07-22 22:04:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 227 transitions. [2022-07-22 22:04:08,785 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 227 transitions. Word has length 97 [2022-07-22 22:04:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:08,785 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 227 transitions. [2022-07-22 22:04:08,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-22 22:04:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 227 transitions. [2022-07-22 22:04:08,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 22:04:08,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:08,787 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:04:08,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:09,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:09,008 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1647697566, now seen corresponding path program 1 times [2022-07-22 22:04:09,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:09,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709341168] [2022-07-22 22:04:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:04:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:04:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 22:04:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:04:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:04:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:04:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:04:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:04:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:04:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:04:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 22:04:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:28,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709341168] [2022-07-22 22:04:28,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709341168] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:04:28,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274645343] [2022-07-22 22:04:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:28,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:28,900 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) [2022-07-22 22:04:28,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:04:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:29,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 2595 conjuncts, 104 conjunts are in the unsatisfiable core [2022-07-22 22:04:29,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:29,716 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 [2022-07-22 22:04:29,928 INFO L356 Elim1Store]: treesize reduction 88, result has 32.3 percent of original size [2022-07-22 22:04:29,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 93 [2022-07-22 22:04:31,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:04:31,607 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:04:31,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 55 [2022-07-22 22:04:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-22 22:04:31,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:04:32,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:04:32,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:04:32,879 INFO L356 Elim1Store]: treesize reduction 750, result has 0.1 percent of original size [2022-07-22 22:04:32,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 177 treesize of output 1 [2022-07-22 22:05:10,912 WARN L233 SmtUtils]: Spent 34.30s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:05:46,425 WARN L233 SmtUtils]: Spent 34.27s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:06:17,395 WARN L233 SmtUtils]: Spent 30.57s on a formula simplification. DAG size of input: 302 DAG size of output: 230 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-22 22:06:17,397 INFO L356 Elim1Store]: treesize reduction 214, result has 75.0 percent of original size [2022-07-22 22:06:17,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 18 new quantified variables, introduced 66 case distinctions, treesize of input 73220 treesize of output 52806